Calling all dessert enthusiasts and chocolate lovers! Prepare to be utterly captivated by the ultimate sweet treat: Kit Kat Brownies. Imagine a profoundly fudgy, irresistibly moist chocolate brownie, generously studded and topped with the iconic crisp wafer and smooth chocolate of Kit Kat bars. This isn’t just a brownie; it’s a sensory experience, a harmonious blend of textures and an explosion of chocolate in every single bite. And the best part? This indulgent masterpiece comes together effortlessly in just one bowl, making it a perfect project for bakers of all skill levels.
If you’re a fan of rich, decadent brownies, you’ll also adore these Ferrero Rocher brownies or our classic chocolate ganache brownies. But for an unrivaled combination of chewy, soft chocolate and delightful crunch, these Kit Kat brownies are truly in a league of their own. Get ready to elevate your brownie game to a whole new level!
Why You’ll Absolutely Adore These Fudgy Kit Kat Brownies
What’s not to love about a brownie that combines everything you crave in a dessert? These Kit Kat brownies are engineered for maximum delight, promising a baking experience that’s as enjoyable as the eating itself. Here’s why this recipe will quickly become a cherished favorite:
- Unforgettable Texture: Built upon an adaptation of my absolute favorite brownie recipe, these brownies boast a dreamlike texture. They are incredibly fudgy, intensely moist, and dense yet tender, melting in your mouth with every bite. This luxurious brownie base is then beautifully interlaced with the distinctive crisp wafer from the Kit Kat bars, creating a dynamic contrast that texture lovers will go wild for. It’s the perfect chewy-crunchy symphony!
- Intense Chocolate Flavor: We’re talking serious chocolate here. The rich chocolate brownie batter is amplified by the presence of dark chocolate and cocoa powder, delivering a profound chocolatey depth. This is complemented by the smooth milk chocolate coating of the Kit Kat bars, ensuring a multifaceted chocolate experience in every single morsel. You get intense, sweet, and perfectly balanced chocolate notes throughout.
- Remarkably Easy to Make: Don’t let the gourmet results fool you – these brownies are incredibly straightforward to prepare. They are perfect for beginner bakers, busy weeknights, or even a fun baking project with kids. The entire recipe comes together in ONE BOWL, minimizing cleanup and fuss. You won’t need any fancy equipment; just a whisk, a bowl, and an oven stand between you and brownie bliss.
- Perfect for Any Occasion: Whether you’re looking for a show-stopping dessert for a party, a comforting treat for a cozy evening, or a delightful edible gift, these Kit Kat brownies fit the bill. Their striking appearance and irresistible flavor make them a crowd-pleaser every time.
- Customizable Fun: While classic Kit Kats are divine, this recipe is a playground for culinary creativity. Experiment with different Kit Kat flavors (mint, caramel, cookies and cream!) to personalize your brownies. It’s a versatile recipe that encourages you to play and discover new favorite combinations.
These Kit Kat brownies are unapologetically rich, deeply satisfying, and completely irresistible. Designed to be thick and decadent, this recipe typically yields about 16 generous brownies when baked in an 8×8 inch square baking tin. Prepare for rave reviews!
Essential Ingredients You’ll Need for Decadent Kit Kat Brownies
Crafting the perfect Kit Kat brownie starts with a selection of high-quality ingredients. Each component plays a crucial role in achieving that signature fudgy texture and rich flavor profile. Here’s a detailed look at what you’ll need, along with some insights into their purpose:
You’ll find detailed quantities and step-by-step instructions in the recipe card below, but here’s a breakdown of what makes these brownies so special.
- Fat: Unsalted Butter & Vegetable Oil: We use a powerful combination of both unsalted butter and neutral-flavored vegetable oil (like canola or sunflower oil). Butter is essential for its rich, dairy flavor, adding a depth that oil alone cannot provide. Vegetable oil, on the other hand, contributes significantly to the brownies’ moisture and tenderness, ensuring they remain soft and fudgy for days. Together, they create a wonderfully rich, soft, and moist brownie texture.
- Chocolate: Dark Chocolate (50% Cocoa Solids / Semi-Sweet): For the brownie batter itself, I recommend using good quality dark chocolate with around 50% cocoa solids. This “semi-sweet” chocolate adds to the incredible fudgy texture and provides an intense, complex chocolate flavor that forms the foundation of these brownies. Avoid using chocolate chips here; a good quality chocolate bar, chopped, will melt more smoothly and yield superior results.
- Sweeteners: Granulated Sugar & Light Brown Sugar: Our recipe utilizes two types of sugar, each contributing distinct qualities. White granulated sugar provides straightforward sweetness and helps create that desirable crinkly top crust on the brownies. Light brown sugar adds a subtle caramel-like undertone, enhancing the overall flavor complexity, and crucially, it contributes extra moisture, making the brownies even fudgier.
- Eggs: Large, Room Temperature: Large eggs are vital for both structure and richness. Using eggs at room temperature is important because they emulsify better with the melted butter and chocolate, creating a smoother, more cohesive batter and preventing a dense, cakey texture. Plan ahead and take them out of the fridge an hour before baking, or quickly warm them in a bowl of warm water.
- Flour: All-Purpose Flour (Plain Flour): Just regular all-purpose flour is all you need. The key is not to overdo it; too much flour can lead to dry, tough brownies. We use just enough to bind the ingredients without sacrificing the fudginess.
- Cocoa Powder: Dutch-Processed (or Unsweetened Natural): I typically opt for Dutch-processed cocoa powder for its rich, dark color and less bitter, smoother chocolate flavor. However, regular unsweetened cocoa powder will also work beautifully, offering a slightly more intense, earthy chocolate taste. Choose your preference!
- Salt: Fine Table Salt: A small amount of salt is a non-negotiable ingredient in baking. It doesn’t just balance out the sweetness; it also remarkably intensifies the chocolate flavor, making every bite taste even more decadent. Don’t skip it!
- Pure Vanilla Extract: While you might not distinctly taste vanilla as a standalone flavor, pure vanilla extract acts as a crucial enhancer. It rounds out and balances all the other flavors, adding depth and warmth. Always use pure vanilla extract over synthetic essence for the best aromatic contribution.
- Kit Kat Bars: Your Star Ingredient!: These are the heroes of our brownies! I find that the larger Kit Kat blocks often have a slightly higher chocolate-to-wafer ratio, contributing to a more satisfying crunch and melt. However, any size Kit Kat (like the smaller 4-stick packs) will work perfectly. You’ll need approximately 2 large blocks or about 20 individual sticks in total. I recommend reserving some for crumbling over the top for an enticing finish, typically using 14-16 sticks within the batter and the rest as a delicious crumble.
Feel free to experiment with ANY Kit Kat flavor you adore! Imagine the possibilities: a zesty orange Kit Kat for a citrusy twist, a rich caramel Kit Kat for extra indulgence, or even a refreshing mint Kit Kat for a cool, chocolatey bite. For the brownies featured in these photos, I used a delightful combination of classic original milk chocolate Kit Kats and the ever-popular Cookies and Cream Kit Kats, proving that variety is truly the spice of life (and brownies!).
Essential Tools You’ll Need for Baking Kit Kat Brownies
One of the many joys of this Kit Kat brownie recipe is its simplicity, which extends to the minimal equipment required. You won’t need any specialized gadgets, just a few kitchen basics to get the job done efficiently and effectively:
- A large mixing bowl: Essential for melting chocolate and butter, and combining all your ingredients without any spills. Choose one that gives you plenty of room to whisk vigorously.
- A sturdy balloon whisk: Perfect for thoroughly incorporating wet ingredients and ensuring a smooth, lump-free batter.
- A flexible rubber spatula: Ideal for scraping down the sides of the bowl, folding in dry ingredients gently, and spreading the batter evenly in the pan.
- An 8×8 inch square baking pan: The perfect size for achieving thick, substantial brownies. Ensure it’s sturdy and oven-safe.
How to Make the Best Fudgy Kit Kat Brownies: A Simple Guide
You’re going to absolutely love how quick and easy these Kit Kat brownies are to prepare. With minimal fuss and just one bowl, anyone can achieve bakery-quality results right in their own kitchen.
For precise measurements and a printable version, refer to the comprehensive recipe card below.
- Melt the Chocolate and Butter: In your large microwave-safe bowl, combine the chopped dark chocolate and unsalted butter. Microwave in short bursts (2-3 times for 30 seconds each), stirring thoroughly after each interval. This gentle approach prevents overheating and ensures a silky-smooth, well-combined mixture. It should be fully melted and glossy.
- Whisk in Wet Ingredients: Once your chocolate-butter mixture is perfectly melted, it’s time to build the flavor. First, whisk in the room temperature eggs and pure vanilla extract until just combined. Next, add both the granulated sugar and light brown sugar, whisking vigorously for about 1-2 minutes until the mixture lightens slightly in color and becomes thick and glossy. This aeration step is crucial for achieving that desirable crackly top crust!
- Incorporate Dry Ingredients: Carefully sift in the all-purpose flour, cocoa powder, and salt directly into your wet mixture. Using a rubber spatula, gently fold these dry ingredients into the wet mixture until just combined. Be careful not to overmix, as this can lead to tough brownies. A few streaks of flour are acceptable at this stage; overmixing will develop gluten and make your brownies cakey.
- Layer the Deliciousness: Now for the fun part! Pour exactly half of your luscious brownie batter into your prepared 8×8 inch square baking pan, ensuring it’s spread evenly. Arrange 14-16 whole Kit Kat sticks side-by-side over the batter, leaving small gaps for the top layer of batter to seep in. This creates an incredible hidden layer of crisp wafer. Gently spoon or drizzle the remaining brownie batter over the Kit Kat layer, carefully spreading it to cover the bars completely. Finally, crumble the remaining Kit Kat sticks by hand and scatter them generously over the top of the batter.
- Bake to Perfection: Transfer your pan to a preheated oven. Bake for approximately 30-36 minutes. The brownies are done when the edges look set and the top has a flaky, slightly cracked appearance. A toothpick inserted into the center should come out looking sticky with moist crumbs attached – not wet batter. Remember, brownies continue to bake slightly as they cool in the hot pan, so it’s always better to slightly underbake for maximum fudginess.
Expert Tips and Tricks for Perfect Kit Kat Brownies
Achieving the ideal fudgy brownie is an art, and a few simple tricks can make all the difference. Follow these expert tips for Kit Kat brownies that are consistently perfect every single time:
- Mastering Baking Time for Your Desired Texture: Baking time is the most critical factor for brownie texture.
- For ultra-fudgy, slightly gooey, and melt-in-your-mouth brownies that some prefer, aim for the 30-minute mark.
- If you prefer a brownie that is still wonderfully dense and fudgy but completely cooked through and holds its shape a little better, bake for approximately 35-36 minutes.
- Always remember that oven temperatures can vary significantly. It’s wise to start checking your brownies a few minutes before the minimum suggested baking time.
- Avoid the Cardinal Sin of Overbaking: This is arguably the most important rule for achieving fudgy brownies. Overbaking will result in dry, cakey brownies – the opposite of what we’re aiming for. The brownies are perfectly done when a toothpick inserted into the center comes out with moist, sticky crumbs attached, or looks fudgy, but without any wet batter. Brownies continue to “carry-over bake” in the hot tin as they cool due to their dense nature. So, when in doubt, it’s always better to slightly underbake than to overbake.
- Embrace the Power of Cooling: Patience is a virtue, especially when it comes to brownies. Allowing your brownies to cool completely in the pan is essential for them to set properly, become perfectly fudgy, and achieve clean cuts. Warm brownies will be too soft and crumbly to cut neatly. For the absolute best texture, let them cool for at least 1-2 hours, or even overnight if you can resist!
- Get Creative with Kit Kat Flavors: Don’t limit yourself to just one type of Kit Kat! This recipe is fantastic for experimenting. Pick 2-3 complementary Kit Kat flavors (e.g., milk chocolate, white chocolate, and dark chocolate, or seasonal varieties like pumpkin spice or raspberry) and layer them. This adds an exciting depth of flavor and visual appeal to your brownies.
- Precision with Ingredients: For baking, accuracy is key. While cup measurements are provided, for the most consistent and professional results, it’s highly recommended to use a kitchen scale to weigh your dry ingredients like flour and cocoa powder. This eliminates variations that can occur from different packing methods.
- Cutting Perfect Squares: Once cooled, use a large, sharp knife to cut your brownies. For super clean edges, wipe the knife clean with a damp cloth after each cut.
While these are famously known as Kit Kat brownies, you could truly call them “candy bar brownies” because this versatile recipe works wonderfully with a variety of other candy bars! Imagine the possibilities: try layering in chopped Twix bars for a caramel-cookie crunch, or diced Snickers or Mars Bars for a delightful mix of nougat, caramel, and nuts. This brownie base is a perfect canvas for your favorite candy additions!
Storage and Serving Suggestions for Kit Kat Brownies
Proper storage ensures your Kit Kat brownies remain fresh, fudgy, and delicious for as long as possible. Here’s how to keep them at their best and some ideas for enjoying them:
- Room Temperature: Store these brownies in an airtight container at room temperature for 3-4 days. While they are delightful on day one, many believe brownies actually improve in texture and flavor on day two as the flavors meld and the fudginess intensifies.
- Refrigerator Storage: For extended freshness, especially in warmer climates, you can store your Kit Kat brownies in an airtight container in the fridge for up to 5-6 days. When serving from the fridge, you might want to let them come to room temperature for about 15-20 minutes, or even warm them slightly in the microwave for a few seconds, to restore their gooey texture.
- Freezing for Long-Term Enjoyment: Kit Kat brownies freeze exceptionally well for up to 2 months. For best results when freezing:
- Allow the brownies to cool completely before cutting them into individual portions.
- Wrap each portion tightly in plastic wrap, then place them in a freezer-safe airtight container or a heavy-duty freezer bag. This double layer of protection prevents freezer burn.
- To thaw, simply remove the desired number of brownies from the freezer and let them come to room temperature on the counter for a few hours, or warm them gently in the microwave.
- Serving Suggestions:
- Warm and Gooey: Serve them slightly warm, perhaps with a scoop of vanilla bean ice cream and a drizzle of chocolate sauce, for an incredibly indulgent dessert experience.
- Room Temperature: Perfect on their own with a glass of milk or a cup of coffee.
- Garnishes: A sprinkle of sea salt flakes can enhance the chocolate flavor, or a dusting of cocoa powder for an elegant touch.
More Irresistible Brownie and Sweet Treat Recipes You’ll Love
If you’ve fallen head over heels for these Kit Kat brownies, you’re in for a treat! Our collection features a variety of other indulgent brownies and sweet slices that are guaranteed to satisfy your cravings. Explore these delicious options for your next baking adventure:
- Fudgy Marshmallow Brownies: A delightful gooey twist on a classic.
- Biscoff Brownies: For lovers of spiced cookie butter, these are a dream.
- Brownie Blondies: The best of both worlds – chewy, chocolatey, and buttery.
- Chocolate Caramel Brownies: A rich combination of chocolate and luscious caramel.
- Chocolate Brownie Pie: When a brownie simply isn’t enough, turn it into a pie!
- Kit Kat Truffles: Another delightful way to enjoy your favorite candy bar.
- Chocolate Peanut Butter Brownies: A timeless pairing that never disappoints.
IF YOU TRY THIS amazing Kit Kat brownie recipe, please take a moment to leave a rating and comment below. Your feedback is incredibly valuable, as I love hearing from you, and it genuinely helps other readers discover and enjoy these recipes too!
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Kit Kat Brownies
16
brownies
15
minutes
35
minutes
50
minutes
★
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Ingredients
- 85 g unsalted butter (3oz / ¾ stick)
- ¼ cup veg oil (60ml)
- 100 g dark chocolate (50% cocoa solids) (3.5oz)
- 95 g plain (all-purp) flour (¾ cup / 3.4oz)
- 40 g unsweetened cocoa powder (⅓ cup)
- ½ teaspoon table salt
- ½ cup granulated sugar (100g / 3.5oz)
- ½ cup light brown sugar, packed (100g / 3.5oz)
- 3 large eggs, room temp
- 2 teaspoons pure vanilla extract
- 2 large Kit Kat blocks (or 20 individual sticks)
For the most consistent and best results, always weigh ingredients where a weight is provided.
Equipment
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Large mixing bowl
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Balloon whisk
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8 inch square baking pan
Instructions
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Preheat your oven to 180°C / 350°F (160°C fan forced). Line an 8×8 inch square baking pan with parchment paper, leaving an overhang on two sides to easily lift the brownies out later.
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In a large microwave-safe bowl, combine the chopped dark chocolate and unsalted butter. Melt them together in the microwave using 30-second intervals, stirring thoroughly after each to ensure a smooth, uniform mixture without overheating.
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To the melted chocolate and butter, add the room temperature eggs, both sugars (granulated and light brown), and pure vanilla extract. Whisk vigorously for 1-2 minutes until the mixture is thick, glossy, and slightly lighter in color. This step helps create that signature crinkly top.
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Sift in the all-purpose flour, cocoa powder, and salt into the wet ingredients. Gently fold with a rubber spatula until just combined. Be careful not to overmix; a few visible streaks of flour are better than a tough brownie.
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Pour half of the brownie batter into your prepared pan and spread it evenly to create the base. Arrange 14-16 Kit Kat sticks side-by-side over the batter, leaving small gaps. Then, carefully spoon or drizzle the remaining batter over the Kit Kat layer, spreading gently to cover them completely.
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Crumble the remaining Kit Kats by hand into smaller pieces and generously scatter them over the top of the brownie batter.
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Bake for 30-36 minutes. The brownies are ready when the edges are set, the top is flaky, and a toothpick inserted into the center comes out with moist, sticky crumbs attached (not wet batter). Ensure you avoid hitting a Kit Kat piece when testing for doneness.
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Allow the brownies to cool in the pan for at least 15-20 minutes before carefully lifting them out using the parchment paper overhang. Transfer them to a wire rack to cool completely.
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Serve warm for a deliciously gooey experience, or let them cool completely for the chocolate to re-set, resulting in a perfectly fudgy and easy-to-slice brownie.
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Please take a moment to rate this recipe. Your feedback is greatly appreciated by me and other readers, and it helps me continue creating more delicious recipes.
Notes
- Oven Variability: All ovens vary in temperature. It’s always best practice to start checking for doneness 3-5 minutes before the recipe suggests to prevent overbaking.
- Weighing Ingredients for Best Results: For precise and consistent baking, you should always weigh ingredients like flour and cocoa powder. Affordable kitchen scales are a great investment. If weighing isn’t possible, use the spoon-and-level method (gently spoon flour into a measuring cup and level off the top, rather than scooping directly from the bag).
- The Toothpick Test: The brownies are done when a toothpick inserted into the center (avoiding a Kit Kat piece) comes out with moist, sticky crumbs attached, or looks fudgy. It should no longer look like wet batter.
- Underbake, Don’t Overbake: Brownies are dense and continue to cook in the hot pan after being removed from the oven (carry-over baking). It’s always better to slightly underbake them for that ultimate fudgy texture, rather than overbake and end up with dry, cakey brownies.
- Flavor Experimentation: Feel free to get creative and use a mix of different Kit Kat flavors that complement each other for an extra layer of enjoyment and surprise.
EXPLORE MORE BROWNIES, BARS & SLICES!
308
kcal
Marie Roffey
Dessert
American
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Don’t forget to leave a rating and comment below and let me know how it was! I love hearing from you. Nutrition information is approximate and derived from an online calculator. The brands you use may cause variations.