Swirled Brownie Blondies

Can’t decide between the rich, buttery sweetness of a blondie and the deep, fudgy indulgence of a brownie? You’re not alone! Our irresistible **Brownie Blondies** offer the best of both worlds, blending these beloved treats into one spectacular dessert bar. Each bite delivers a decadent experience with a perfectly fudgy texture and a delightful blend of caramel and chocolate flavors. Crafted with real chocolate in both layers, these bars ensure you never have to make that tough choice again.

And who could forget that signature **perfectly crackly, flaky top**? It’s the crowning glory that promises an exquisite texture with every piece.

Imagine this: the sweet, caramelly notes from the blondie layer harmoniously combined with the intense, fudgy richness of the brownie layer. These brownie blondies weren’t just created; they were *engineered* to be the ultimate fusion of their individual counterparts. Many find them even more satisfying than either a standalone brownie or a blondie, providing a complex flavor profile and texture that’s truly unique.

So, forget the diet and put off that dentist appointment for another day. Today is all about unabashedly enjoying the dual delight of brownie and blondie in one glorious creation. You absolutely deserve this moment of pure bliss!

If you’re a devoted brownie enthusiast, our **chocolate caramel brownies** are an absolute must-try. But if blondies light up your world, you definitely need to experience these incredible **raspberry chocolate chip blondies**.

A batch of brownie blondies, cut into squares, surrounded by chocolate chips.

Table of Contents

  • The Ultimate Indulgence: Brownie Blondies
  • Why You’ll Love These Brownie Blondies
  • Key Ingredients You’ll Need
  • Essential Tools for Baking Success
  • How to Make These Incredible Blondie Brownies
  • Expert Tricks and Tips for Perfection
  • Delicious Variations to Try
  • Serving Suggestions
  • Storage and Make-Ahead Tips
  • More Brownies and Blondies You’ll Adore

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Key Ingredients You’ll Need

While the list of ingredients for these brownie blondies might seem extensive, each component plays a vital role in achieving their incredible flavor and texture. Every element, from the specific types of sugar to the variety of chocolates, contributes to the ultimate decadence of these bars. If you’re considering omitting anything, perhaps make it the chocolate chips – though we highly recommend keeping them for that extra burst of chocolatey goodness!

Ingredients for brownie blondies on a marble surface.

For detailed quantities and step-by-step instructions, please refer to the recipe card below.

  • Butter: Opt for unsalted butter to maintain precise control over the overall salt content in your bake. This allows you to balance the flavors perfectly.
  • Flour: Simple plain flour, also known as all-purpose flour, is all you need. It provides the essential structure for these fudgy bars.
  • Sugar: The secret to both sweetness and texture lies in using two types of sugar. Granulated white sugar contributes to the general sweetness and helps create that coveted flaky, crackly top. Brown sugar, on the other hand, infuses a rich caramel flavor and ensures an unbeatable chewiness. While light brown sugar is commonly used, dark brown sugar can also be substituted for an even deeper molasses note.
  • Eggs: Three large eggs are crucial for binding the ingredients together, adding richness, and contributing to the desired fudgy consistency. Ensure they are at room temperature for optimal mixing.
  • Salt: A small touch of salt is essential for enhancing and balancing the sweetness, bringing out the depth of the chocolate and caramel flavors.
  • Baking Powder: This ingredient is technically optional, as the bars will bake up well without it. However, a tiny amount provides just a subtle lift, resulting in a slightly less dense, more appealing texture.
  • Oil: Incorporating a portion of oil alongside butter is a clever trick to add extra moisture and ensure the blondies and brownies remain wonderfully soft and fudgy even after cooling.
  • Vanilla Extract: Always use pure vanilla extract, not artificial essence. The natural, aromatic flavor of real vanilla significantly elevates the taste profile of both layers.
  • Chocolate: Prepare for a truly decadent experience with four distinct types of chocolate! Melted white chocolate is mixed into one half of the batter, creating the rich blondie base. The other half receives melted dark chocolate and cocoa powder, forming the intense brownie layer. To elevate these bars further, white chocolate chips are folded into the blondie batter, while milk chocolate chips add extra pockets of sweetness to the brownie portion. Feel free to use chocolate chunks if you prefer a different texture.
  • Cocoa Powder: Essential for the brownie layer, cocoa powder amplifies the intense chocolate flavor. Dutch-process cocoa powder is recommended for its smooth, less bitter profile, but regular unsweetened cocoa powder can be used as an alternative.

Essential Tools for Baking Success

Having the right tools on hand will make the baking process for your brownie blondies smooth and enjoyable. Here’s what you’ll need:

  • Mixing bowls: You’ll need at least two, preferably three, for separating batters and mixing dry ingredients.
  • Silicone spatula: Indispensable for gently folding ingredients and scraping every last bit of delicious batter from your bowls.
  • Handheld electric beater: This will make light work of beating the eggs and sugar. While a balloon whisk can be used, an electric beater saves time and effort, ensuring a properly aerated base.
  • 8×8 inch square baking tin: The ideal size for achieving the perfect thickness and generous portion sizes for your brownie blondies.

How to Make These Incredible Blondie Brownies

The beauty of these brownie blondies lies in their simplicity: **you start with just one versatile base batter!** This single batter is then cleverly divided and transformed. One half becomes the rich, caramelly blondie through the addition of white chocolate and white chocolate chips. The other half is infused with melted dark chocolate and cocoa, creating the deep, fudgy brownie layer. Whether you prefer to call them “brownies blondies” or “blondies brownies,” the process is straightforward and undeniably delicious. Let’s get baking!

A collage of 5 images showing how to make brownie blondies.

For detailed instructions, refer to the recipe card below.

  1. Prepare the Base Batter: Begin by beating together the eggs and both types of sugar for about a minute until light and fluffy. This step is crucial for achieving that characteristic crackly top. Next, incorporate the melted butter, oil, and vanilla extract, stirring until just combined. Finally, add your pre-mixed dry ingredients to the wet mixture, mixing gently until no streaks of flour remain, being careful not to overmix.
  2. Flavor the Batter: Divide the prepared base batter equally into two separate bowls. To one bowl, carefully fold in the melted white chocolate and a generous amount of white chocolate chips. This will be your rich, sweet blondie batter. In the second bowl, combine the melted dark chocolate, a touch more oil, and cocoa powder, mixing until fully incorporated. Then, stir in the milk chocolate chips to complete your decadent brownie batter.
  3. Assemble and Bake: Line your chosen baking pan with parchment paper for easy removal. Alternate dolloping generous scoops of each batter randomly into the prepared pan. If you desire a swirled effect, gently run a knife or skewer through the batters a few times, but don’t overdo it, or the colors will blend too much. Bake for 40-50 minutes, or until a toothpick inserted into the center comes out with moist crumbs attached, but no wet batter.

Allow these delectable bars to cool in the tin for at least 35-40 minutes before attempting to transfer them to a wire rack. This cooling period is vital for them to set properly. Once cooled, you have options: serve them **still warm with a scoop of vanilla ice cream for an ultimate indulgent dessert**, or let them set up completely for **more portable and easily shareable squares**.

Important Tip: Patience is key! If you try to cut your brownie blondies when they are still too warm, you’ll likely end up with a wonderfully gooey, but ultimately messy, result. Give them ample time to set for clean, perfect slices.

Expert Tricks and Tips for Perfection

Achieving the perfect brownie blondies is easier with a few key techniques. Follow these expert tips for a truly sensational bake:

  • Always Weigh Your Ingredients: For precise and consistent results, especially when dealing with flour and cocoa, always use a digital kitchen scale. These are inexpensive and eliminate guesswork. Even a slight variation in the amount of dry ingredients can drastically alter the final texture of your bars.
  • Room Temperature Eggs are Essential: Ensure your eggs are at room temperature before you begin. Room temperature eggs emulsify better with other ingredients, creating a smoother, more uniform batter that bakes evenly. If you forgot to take them out of the fridge, simply place them in a bowl of warm (not hot or boiling) water for about 10 minutes.
  • Melted Butter Should Not Be Hot: While the butter needs to be melted, it shouldn’t be piping hot when added to the other ingredients. Hot butter can scramble your eggs. After melting, allow it a few minutes to cool slightly. If you’re melting it in short bursts in the microwave, it’s less likely to overheat significantly.
  • Understand Your Oven’s Personality: Ovens are notoriously temperamental. Many ovens run hotter or colder than their display temperature indicates. This means baking times can vary significantly; what takes 45 minutes in one oven might take 40 or even 50 in another. Investing in an affordable oven thermometer (or two for larger ovens) is highly recommended to confirm your oven is at the correct internal temperature.
  • Knowing When They’re Done: Pinpointing the exact moment brownies and blondies are perfectly baked can be tricky. Look for these crucial signs:
    • The top surface should appear dry and beautifully crackly.
    • When you gently shake the pan, the bars should not wobble excessively but should still feel slightly soft in the center, not hard.
    • Insert a toothpick or thin skewer into the center. It should emerge with moist crumbs attached or looking slightly sticky, but never with wet, raw, or unbaked batter.
A stack of 3 brownie blondies.

Delicious Variations to Try

The beauty of these brownie blondies lies in their versatility. While the chocolate chips are a fantastic addition for extra decadence, you can certainly customize them to your liking. Here are some delightful variations:

  • Chip Swaps:
    • Feel free to omit the chocolate chips entirely if you prefer a smoother bar.
    • Experiment with different chip flavors: swap milk chocolate chips for dark chocolate chips for a more intense brownie experience, or replace white chocolate chips with butterscotch or even peanut butter chips for unique flavor twists.
  • Nutty Additions: Introduce a lovely crunch by folding in chopped nuts like walnuts, pecans, or almonds into either the brownie or blondie batter, or both!
  • Candy Mix-Ins: Elevate the fun factor by adding your favorite chopped candies like M&M’s, Rolo pieces, or even crushed Oreos for a cookies and cream twist.
  • Swirls of Flavor: Before baking, drizzle a layer of caramel sauce or a swirl of peanut butter over the top of the combined batters for an extra layer of flavor and visual appeal.
  • If you’re looking for more adventurous brownie recipes, you could also try these fabulous **Kit Kat brownies**.

Serving Suggestions

These brownie blondies are incredibly versatile and can be enjoyed in many ways. For a truly indulgent experience, serve them slightly warm, perhaps with a scoop of premium vanilla bean ice cream that slowly melts over the fudgy squares. A drizzle of warm caramel or hot fudge sauce would also make an exquisite addition.

For a simpler treat, let them cool completely and enjoy them at room temperature with a cup of coffee or a tall glass of milk. They make an excellent addition to dessert platters at parties, potlucks, or family gatherings, as their rich nature means a small piece goes a long way. They’re also perfect for lunchboxes or as a delightful afternoon pick-me-up.

Storage and Make-Ahead Tips

These rich brownie blondies are ideal for serving at parties or potlucks, as a single batch yields many satisfying portions. Thankfully, they’re also fantastic for enjoying over time:

  • Freezing: You’ll be delighted to know that these bars freeze beautifully! Once completely cooled, cut the brownie blondies into individual squares. Arrange them in a single layer in an airtight container, separating layers with parchment paper to prevent sticking. They can be stored in the freezer for up to 3 months.
  • Thawing: To thaw, simply remove the desired number of squares from the freezer and let them come to room temperature for about 30 minutes. If you’re in a hurry or prefer them warm, a quick zap in the microwave will bring them up to temperature quickly, resulting in an even gooier treat.
  • Leftovers: Any leftover brownie blondies can be stored in an airtight container at room temperature (like in your pantry) for 4-5 days. While refrigeration can extend their shelf life, it might alter their fudgy texture slightly.
  • Making Ahead: These are excellent candidates for making ahead. You can bake an entire pan and freeze it for up to 3 months. Once cooled completely to room temperature, wrap the entire pan tightly with 2-3 layers of plastic wrap, then an additional layer of aluminum foil to prevent freezer burn. To serve, thaw the whole pan in the refrigerator overnight.
A batch of brownie blondies surrounded by chocolate chips.

More Brownies and Blondies You’ll Adore

  • Biscoff Brownies
  • Biscoff Blondies
  • Ferrero Rocher Brownies
  • How to Make Perfect Brownies
  • Oreo Blondies
  • Strawberry Lemon Blondies
  • Brown Butter Blondies

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Top down view of brownie blondies on a sheet of baking paper.

Brownie Blondies

Yield:

16
serves
Prep Time:

15
minutes
Cook Time:

45
minutes
Total Time:

1
hour

Rating: 5 out of 5 stars (based on 4 ratings)

These brownie blondies are a delightful combination of rich brownie and sweet blondie, all in one fudgy bar. With distinct layers of intense chocolate brownie and sweet, caramelly blondie, crowned with a perfectly flaky top, they truly offer the best of both dessert worlds.
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Ingredients

  • ¾ cup granulated sugar (150g / 5.3oz)
  • ¾ cup light brown sugar, packed (150g / 5.3oz)
  • 1 ½ cups plain (all-purpose) flour (195g / 6.9oz)
  • ¼ teaspoon baking powder
  • ½ teaspoon salt
  • 3 large eggs
  • 85 g unsalted butter, melted (3oz)
  • cup oil + 2 tablespoons extra (notes 1)
  • 2 teaspoons vanilla extract
  • 75 g white chocolate, melted (1.8oz)
  • cup white chocolate chips
  • 75 g dark (50%) chocolate, melted (1.8oz)
  • 2 tablespoons unsweetened cocoa powder
  • cup milk chocolate chips

For best results, always weigh ingredients where a weight is provided

Equipment

  • mixing bowls
  • electric beater / hand mixer
  • 8 inch square baking pan

Instructions

  1. Preheat your oven to 180C / 350F (160C fan forced). Line an 8×8 inch square baking pan with baking paper, ensuring some overhang on the sides for easy removal.
  2. In a medium bowl, combine the flour, baking powder, and salt. Whisk these dry ingredients thoroughly until they are well mixed and free of any lumps.
  3. In a large mixing bowl, using an electric beater (or a sturdy whisk), beat the eggs and both the granulated sugar and light brown sugar together for one minute until the mixture is lightened and slightly fluffy.
  4. Add the slightly cooled melted butter, ⅓ cup of oil, and vanilla extract to the egg and sugar mixture. Mix until everything is just combined.
  5. Gradually add the prepared flour mixture to the wet ingredients. Beat on low speed or fold gently until the flour is just incorporated and no dry streaks remain. Be careful not to overmix, which can lead to tough bars.
  6. Divide the batter evenly by tipping half of it into a second bowl (you can use the bowl where you mixed the dry ingredients).
  7. To the first bowl, add the melted white chocolate and gently mix it through until fully incorporated. Then, fold in the white chocolate chips. This is your blondie batter.
  8. To the second bowl (the other half of the batter), add the melted dark chocolate, cocoa powder, and the remaining 2 tablespoons of oil. Beat this mixture until it’s well combined and smooth. Finally, fold in the milk chocolate chips. This is your brownie batter.
  9. Using large spoonfuls, dollop both the blondie and brownie batters randomly into your prepared baking tin. You can leave them as distinct dollops or gently swirl them together once or twice with a knife for a marbled effect.
  10. Bake for 40-50 minutes. The bars are ready when a toothpick inserted into the center comes out with some moist, sticky crumbs attached, but no wet batter. The top should appear set and slightly crackly.
  11. Allow the brownie blondies to cool completely in the tin for at least 35-40 minutes before carefully lifting them out using the parchment paper overhang. This cooling time is crucial for them to firm up.
  12. These bars can be served warm for a wonderfully gooey experience, or allowed to cool completely for the chocolate chips to re-set, making them easier to cut into neat squares and more portable.
  13. Please take a moment to rate this recipe and leave a comment. Your feedback is truly appreciated and helps us create more delicious recipes for you!

Notes

  1. Tablespoon Measurement: Please note that I use a standard Australian 20ml tablespoon, which is equivalent to 4 teaspoons. Many other countries use a 15ml tablespoon. Double-check your measuring spoons to ensure accuracy.
  2. Baking Powder vs. Baking Soda: It’s important to remember that baking powder and baking soda are not interchangeable. Use specifically baking powder as directed in this recipe.
  3. Oven Variations: All ovens vary in temperature and performance. Always begin checking for doneness 3-5 minutes before the suggested baking time to prevent overbaking.
  4. Weighing Ingredients: For the most precise and consistent baking results, it is always recommended to weigh ingredients like flour and sugar using a kitchen scale. These scales are relatively inexpensive and greatly improve accuracy. If you cannot weigh the ingredients, use the “spoon and level” method for flour (spoon flour into the measuring cup, then level off with a straight edge) rather than scooping directly from the bag, which can compact the flour.

EXPLORE MORE BROWNIES, BARS & SLICES!

Calories:

312
kcal
Author:
Marie Roffey
Course:
Dessert
Cuisine:
American

Have you tried this recipe?
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.
Nutrition Facts
Brownie Blondies
Amount Per Serving (44 g)
Calories 312
Calories from Fat 144
% Daily Value*
Fat 16g25%
Saturated Fat 7g44%
Trans Fat 0.2g
Polyunsaturated Fat 2g
Monounsaturated Fat 6g
Cholesterol 48mg16%
Sodium 99mg4%
Potassium 129mg4%
Carbohydrates 39g13%
Fiber 1g4%
Sugar 28g31%
Protein 3g6%
Vitamin A 188IU4%
Vitamin C 0.04mg0%
Calcium 44mg4%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.