Peanut Butter Brookie Recipe That Will Wow Your Taste Buds

Updated On: October 15, 2025

If you’re a fan of both brownies and cookies, then the peanut butter brookie is about to become your new favorite dessert! This delightful hybrid combines the rich, fudgy texture of a brownie with the soft, chewy goodness of a peanut butter cookie.

The result is a decadent treat that’s perfect for any occasion, whether you’re baking for a party, a family dessert, or simply craving a sweet indulgence. With layers of chocolate and peanut butter, every bite offers a perfect balance of flavors that will satisfy even the most discerning sweet tooth.

What makes this recipe truly special is how easy it is to make at home. Using simple pantry staples and straightforward steps, you can whip up these brookies in less than an hour.

Plus, they keep wonderfully, making them ideal for prepping ahead or sharing with friends. Ready to dive into a baking adventure that marries two classic favorites?

Let’s get started with this irresistible peanut butter brookie recipe!

Why You’ll Love This Recipe

Peanut butter brookies are the ultimate crowd-pleaser that brings together the best of both worlds. Here’s why you’ll love making and eating them:

  • Dual textures: Enjoy the fudgy, chocolatey brownie layer paired with a soft, peanut butter cookie on top.
  • Simple to prepare: Made with common ingredients, no fancy equipment needed.
  • Perfect for sharing: Cut into squares for easy serving at parties, bake sales, or family gatherings.
  • Customizable: Add chocolate chips, nuts, or swirl in some jam to personalize your brookies.
  • Great for all skill levels: Whether you’re a beginner or a seasoned baker, this recipe is straightforward and rewarding.

Ingredients

  • For the brownie layer:
    • 1/2 cup (115g) unsalted butter, melted
    • 3/4 cup (150g) granulated sugar
    • 2 large eggs
    • 1 teaspoon vanilla extract
    • 1/3 cup (40g) unsweetened cocoa powder
    • 1/2 cup (65g) all-purpose flour
    • 1/4 teaspoon salt
    • 1/4 teaspoon baking powder
  • For the peanut butter cookie layer:
    • 1/2 cup (130g) creamy peanut butter
    • 1/4 cup (50g) granulated sugar
    • 1/4 cup (55g) brown sugar
    • 1 large egg
    • 1/2 teaspoon baking soda
    • 1/4 teaspoon salt
    • 1/2 cup (65g) all-purpose flour
  • Optional add-ins: 1/2 cup chocolate chips or chopped peanuts

Equipment

  • 9×9 inch (23×23 cm) square baking pan
  • Mixing bowls (two medium-sized)
  • Whisk or electric mixer
  • Rubber spatula
  • Measuring cups and spoons
  • Cooling rack
  • Parchment paper or non-stick spray

Instructions

  1. Preheat your oven to 350°F (175°C). Line your baking pan with parchment paper or lightly grease it to prevent sticking.
  2. Prepare the brownie batter: In a mixing bowl, whisk together the melted butter and sugar until smooth. Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
  3. Combine dry ingredients: In a separate bowl, sift together the cocoa powder, flour, salt, and baking powder. Gradually add these dry ingredients to the wet mixture, folding gently until just combined. Avoid overmixing.
  4. Spread the brownie batter evenly into the prepared baking pan, smoothing the top with a spatula.
  5. Make the peanut butter cookie dough: In another bowl, mix the peanut butter, granulated sugar, and brown sugar until creamy. Beat in the egg until fully incorporated.
  6. Add the dry ingredients for the cookie dough: sift together the flour, baking soda, and salt, then gradually mix into the peanut butter mixture until just combined.
  7. Optionally fold in chocolate chips or chopped peanuts into the cookie dough for extra texture and flavor.
  8. Drop spoonfuls of the cookie dough evenly over the brownie layer. Gently spread or press the cookie dough to cover the brownie batter as much as possible without mixing the two layers together.
  9. Bake the brookie in the preheated oven for 25-30 minutes, or until the cookie layer is set and lightly golden, and a toothpick inserted in the center comes out with a few moist crumbs.
  10. Allow the brookie to cool completely in the pan on a wire rack before slicing into squares. This helps the layers set and makes cutting easier.

Tips & Variations

For an extra fudgy brownie base, try adding an extra tablespoon of butter or substituting half the granulated sugar with brown sugar.

  • Swirl it up: Before baking, swirl some peanut butter gently into the brownie layer for a marbled effect.
  • Nutty upgrade: Add chopped peanuts or walnuts to either layer for added crunch.
  • Chocolate lovers: Sprinkle mini chocolate chips on top of the cookie layer before baking for extra melty pockets of chocolate.
  • Make it gluten-free: Substitute all-purpose flour with a gluten-free baking blend suitable for cookies and brownies.
  • Storage: Store brookies in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week.

Nutrition Facts

Nutrient Amount per Serving (1 piece)
Calories 280 kcal
Fat 16g
Saturated Fat 4g
Carbohydrates 30g
Sugar 20g
Protein 5g
Fiber 2g
Sodium 150mg

Serving Suggestions

Peanut butter brookies are delicious on their own, but you can elevate your serving experience with a few simple touches:

  • Serve warm with a scoop of vanilla ice cream for a decadent dessert.
  • Drizzle with melted chocolate or caramel sauce for extra indulgence.
  • Pair with a glass of cold milk or a cup of coffee.
  • For a party, cut into bite-sized squares and arrange on a platter for easy sharing.
  • Try alongside other treats like these Chocolate Chippy Pumpkin Bread Mix Vegan Recipe Made Easy for a dessert spread.

Conclusion

The peanut butter brookie is a delightful dessert that perfectly blends the rich, fudgy goodness of brownies with the soft, nutty charm of peanut butter cookies. This recipe is straightforward, uses everyday ingredients, and yields a treat that’s bound to impress friends and family alike.

Whether you’re baking for a special occasion or just a cozy night in, these brookies offer a wonderful way to satisfy your sweet cravings with a unique twist. Plus, with tips for customization and easy storage, you can make this recipe your own and enjoy it time and time again.

If you love exploring creative recipes like this, be sure to check out other delicious options such as the Afghan Vegetarian Pulao Recipe Easy and Delicious Guide, Vegan Recipes No Tofu: Delicious Plant-Based Meals, and the fresh Baby Spinach Salad Recipe Vegan: Fresh & Easy Ideas.

Happy baking and bon appétit!

📖 Recipe Card: Peanut Butter Brookie

Description: A delicious combination of brownie and peanut butter cookie in one decadent treat. Perfect for peanut butter lovers craving a rich dessert.

Prep Time: PT15M
Cook Time: PT30M
Total Time: PT45M

Servings: 12 servings

Ingredients

  • 1/2 cup unsalted butter, melted
  • 1 cup granulated sugar
  • 1/2 cup brown sugar, packed
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1/2 cup creamy peanut butter
  • 3/4 cup all-purpose flour
  • 1/4 cup unsweetened cocoa powder
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1/2 cup semi-sweet chocolate chips

Instructions

  1. Preheat oven to 350°F (175°C).
  2. Mix melted butter, granulated sugar, and brown sugar until smooth.
  3. Beat in egg and vanilla extract until combined.
  4. Stir in peanut butter until fully incorporated.
  5. In a separate bowl, whisk together flour, cocoa powder, baking powder, and salt.
  6. Gradually add dry ingredients to wet ingredients and mix until just combined.
  7. Fold in chocolate chips.
  8. Spread batter evenly in a greased 8×8 inch baking pan.
  9. Bake for 25-30 minutes or until a toothpick comes out with a few moist crumbs.
  10. Cool before slicing into squares and serving.

Nutrition: Calories: 280 kcal | Protein: 5 g | Fat: 15 g | Carbs: 32 g

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Photo of author

Marta K

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