Oh wow, I just made these Brownie Blondie Bars, and they smell so amazing. My kitchen was filled with chocolatey, buttery goodness. I couldn’t wait to try one!

The first bite was pure magic. Soft, fudgy brownie meets sweet, chewy blondie. Honestly, it’s like two desserts in one.

I immediately wanted another slice. The mix of chocolate and caramel-y blondie flavors is just irresistible. I kept thinking, “I need to make these again soon.”

So, you should totally try these too. They’re easy, fun, and perfect for sharing… or not! Let’s bake them together.

Why You’ll Love This Recipe

Perfect Combination: These bars are the best of both worlds—half brownie and half blondie, bringing you the best texture and flavor from both treats.
Versatile: Great for a quick snack, dessert, or to bring to a party. They can be served warm, with ice cream on top, or chilled for a more solid texture.
Quick and Easy: Ready in just 30 minutes, this recipe requires minimal ingredients and effort.
Customizable: You can add your favorite mix-ins, from chocolate chips to chopped nuts or even caramel chunks for extra richness.
Crowd-Pleaser: Whether you’re serving them to guests or just enjoying a sweet treat yourself, everyone will be asking for the recipe!

Required Kitchen Tools

Before you begin making your Brownie Blondie Bars, you’ll need the following tools:

Mixing Bowls: You’ll need both a large and medium bowl for the wet and dry ingredients.
Whisk and Spatula: To mix the ingredients together and incorporate everything evenly.
9×9-inch Baking Pan: To bake the bars in. I recommend lining it with parchment paper for easy removal.
Measuring Cups and Spoons: Precision is key in baking.
Oven: Preheat to 350°F to ensure even baking.

Ingredients

Here’s what you’ll need to make these Brownie Blondie Bars (exact measurements are in the recipe card below):

Brownie Layer:

2 Large Eggs: These will provide the structure for the bars.
1 Cup Sugar: Sweetens the brownie layer, giving it that classic fudgy texture.
¾ Cup All-Purpose Flour: Adds the structure to the bars.
⅓ Cup Chopped Walnuts: Optional, but adds a wonderful crunch to the brownie layer.
¼ Teaspoon Salt: Enhances the flavors of the other ingredients.
½ Cup Unsalted Butter, Melted: Butter adds richness and a fudgy texture to the brownie layer.
¼ Cup Unsweetened Cocoa Powder: This gives the brownie layer its classic deep chocolate flavor.

Blondie Layer:

1 Large Egg: The egg will bind the ingredients together for the blondie layer.
1 Cup Light Brown Sugar: For that signature caramelized, toffee-like flavor.
½ Cup Unsalted Butter, Melted: For a soft, chewy texture and rich taste.
1 Cup All-Purpose Flour: The flour is what gives the blondie layer its structure.
1 Teaspoon Vanilla Extract: This will bring out the sweetness in the blondie layer.
¼ Teaspoon Salt: To balance the sweetness and enhance the flavors.
Optional Mix-ins: You can add chocolate chips, white chocolate, or any of your favorite mix-ins here. I often like to throw in a handful of chocolate chips for extra indulgence.

Step-by-Step Instructions

1. Preheat Your Oven and Prepare Your Pan

Start by preheating your oven to 350°F (175°C). While your oven is heating, line a 9×9-inch baking pan with parchment paper. This will make it so much easier to remove the bars once they’re baked.

2. Make the Brownie Layer

In a medium bowl, whisk together the eggs and sugar until combined. Add the melted butter and whisk again until smooth. Next, sift in the cocoa powder, salt, and flour. Stir until everything is combined and you have a smooth, thick batter. Finally, fold in the chopped walnuts, if using. This brownie layer is rich and thick, which is exactly what you want for that fudgy, brownie texture!

3. Make the Blondie Layer

Now, let’s move on to the blondie layer. In a separate bowl, whisk together the melted butter and brown sugar until smooth. Add the egg and vanilla extract, whisking until the mixture is well combined. Add the flour and salt, stirring just until everything comes together. If you want to include chocolate chips or other mix-ins, fold them into the batter at this stage.

4. Layer the Brownie and Blondie Batter

Here comes the fun part—layering the two batters! Pour the brownie batter into the prepared pan and smooth it out evenly. Next, gently spoon the blondie batter over the brownie batter. You can spread it out evenly, but it’s okay if it doesn’t cover every inch—this will create a beautiful marbled effect while baking.

5. Swirl for a Marbled Effect

To create a marbled look, use a knife or a skewer to gently swirl the brownie and blondie layers together. Don’t overdo it—just a few gentle swirls will give you that pretty, swirled appearance.

6. Bake the Bars

Place the pan in the preheated oven and bake for 25-30 minutes or until a toothpick inserted into the center comes out clean (a few moist crumbs are fine, but no wet batter). The bars should have risen slightly and look golden around the edges.

7. Cool and Slice

Allow the Brownie Blondie Bars to cool in the pan for about 10 minutes before transferring them to a wire rack to cool completely. Once they’re completely cool, use a sharp knife to slice them into squares or bars. The texture should be fudgy in the center with a slightly crisp edge, just like the perfect brownie and blondie hybrid!

Variations for Brownie Blondie Bars

Want to make your bars even more unique? Here are some fun variations to try:

Add Chocolate Chips: Stir in a cup of chocolate chips (dark, milk, or white chocolate) to either the brownie or blondie layer for extra chocolatey goodness.
Caramel Swirl: For a rich, gooey twist, swirl in some caramel sauce before baking.
Peanut Butter Blondies: Add some peanut butter chips or swirl in a few spoonfuls of peanut butter to the blondie layer.
Oatmeal Brownie Blondies: Add a cup of rolled oats to the brownie layer for a chewy, hearty texture.
Dried Fruit: If you like a chewy, fruity twist, add raisins, dried cranberries, or cherries to the blondie layer.
Nut-Free: For a nut-free version, just omit the walnuts in the brownie layer and stick to the basic recipe.

Serving and Decoration

How to Serve Brownie Blondie Bars

These bars are delicious on their own, but you can dress them up for special occasions or just make them more indulgent:

Top with Ice Cream: Serve warm with a scoop of vanilla ice cream for an extra indulgent treat.
Drizzle with Caramel Sauce: Drizzle a bit of caramel sauce over the top for a buttery, sweet finish.
Dust with Powdered Sugar: Lightly dust with powdered sugar before serving for a pretty, simple touch.
Serve with Whipped Cream: Top with whipped cream for a light and airy contrast to the rich bars.

Storing Brownie Blondie Bars

If you happen to have leftovers (which is a big “if” in my house), here’s how to store them:

Room Temperature: Store in an airtight container at room temperature for up to 3 days. They’re great for snacking and will stay soft and chewy.
In the Fridge: If you want them to last a little longer, store them in the fridge for up to 5 days. Just make sure they’re covered well to prevent them from drying out.
Freezing: You can also freeze these bars! Wrap them tightly in plastic wrap and place them in an airtight container or freezer bag. They’ll stay fresh for up to 3 months. To thaw, simply leave them at room temperature for a few hours or microwave them for a few seconds.

Nutrition Information (Per Bar)

Nutrient	Amount
Calories	200
Total Fat	10g
Saturated Fat	5g
Cholesterol	40mg
Sodium	60mg
Total Carbohydrates	28g
Dietary Fiber	1g
Sugars	18g
Protein	2g

(Note: Nutritional values may vary depending on specific ingredients used.)

Conclusion

These Brownie Blondie Bars are the perfect dessert when you’re craving both brownies and blondies but can’t decide between the two. They are easy to make, customizable, and absolutely delicious. Whether you’re serving them at a party, enjoying them for a treat, or packing them for lunch, they’re sure to be a hit. The combination of chewy blondies and fudgy brownies is truly a match made in dessert heaven!