Introduction
Imagine a dessert that captures the ultimate debate: brownie or cookie? With Brookies, you don’t have to choose. This delightful hybrid features a layer of rich, fudgy brownie topped with a soft and chewy chocolate chip cookie, all in one perfect bar. It’s the ultimate treat for anyone who can’t decide between the two classic sweets.
Prep & Cook Time
- Prep Time: 20 minutes
- Cook Time: 50 minutes
- Total Time: 1 hour 10 minutes
- Servings: 16
Ingredients
- 2 cups all-purpose flour
- 1 cup cocoa powder
- 1 1/2 teaspoons baking powder
- 1 1/2 teaspoons salt
- 1 cup butter (room temperature)
- 3 cups granulated sugar
- 4 large egg whites
- 2 large eggs
- 2 teaspoons vanilla extract
- 14 ounces semi-sweet chocolate chips
- 2 1/4 cups all-purpose flour
- 1 teaspoon baking soda
- 1 teaspoon salt
- 1 cup unsalted butter (room temperature)
- 3/4 cup granulated sugar
- 3/4 cup brown sugar
- 1 teaspoon vanilla extract
- 2 large eggs
- 2 cups semi-sweet chocolate chips
- Brownie batter (from above)
- Chocolate chip cookie dough (from above)
- 6 ounces semi-sweet chocolate chips
Instructions
- Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan and line it with parchment paper, leaving an overhang on the sides for easy removal.
- Make the brownie batter: In a medium bowl, whisk together the first 2 cups of all-purpose flour, cocoa powder, baking powder, and 1 1/2 teaspoons of salt. Set aside.
- In a large bowl, use a hand mixer or stand mixer to cream together 1 cup of butter and 3 cups of granulated sugar until light and fluffy, about 3 minutes.
- To the butter-sugar mixture, add the 4 egg whites, 2 whole eggs, and 2 teaspoons of vanilla extract. Mix until fully combined.
- Gradually add the dry flour-cocoa mixture to the wet ingredients, mixing on low speed just until no flour streaks remain. Fold in the 14 ounces of semi-sweet chocolate chips. Set this brownie batter aside.
- Make the cookie dough: In another medium bowl, whisk together the 2 1/4 cups of all-purpose flour, baking soda, and 1 teaspoon of salt. Set aside.
- In a separate large bowl, cream together 1 cup of unsalted butter, 3/4 cup granulated sugar, and 3/4 cup brown sugar until light and fluffy, about 3 minutes.
- Beat in 1 teaspoon of vanilla extract and the 2 large eggs until fully incorporated.
- Gradually add the dry flour mixture to the wet cookie ingredients, mixing on low speed until just combined. Fold in the 2 cups of semi-sweet chocolate chips.
- Assemble the Brookies: Spread the prepared brownie batter evenly into the bottom of your prepared baking pan.
- Using your hands or a spoon, drop large, flattened pieces of the chocolate chip cookie dough evenly over the entire surface of the brownie batter. Gently press and spread it to cover most of the brownie layer.
- Sprinkle the final 6 ounces of semi-sweet chocolate chips evenly over the top of the cookie dough layer.
- Bake for 45 to 55 minutes, or until the top is golden brown and a toothpick inserted into the center of the brownie layer comes out with a few moist crumbs (not wet batter). Oven times may vary.
- Let the Brookies cool completely in the pan on a wire rack. Once cool, use the parchment paper overhang to lift the entire slab out of the pan. Place it on a cutting board and slice into 16 bars.
Variations
- Cookie Cups: Press brownie batter into the bottom of a greased muffin tin, top with a ball of cookie dough, and bake for a portable, portion-controlled treat.
- Swirl Design: Instead of layering, you can drop alternating scoops of both batters into the pan and use a knife to gently marble them together before adding the final chocolate chips and baking.
- Salted Caramel Drizzle: After baking and cooling, drizzle the top with store-bought or homemade salted caramel sauce for a sweet and salty twist.
- Ice Cream Sandwiches: Once completely cooled, slice a Brookie in half horizontally and sandwich a scoop of vanilla ice cream in the middle for an epic dessert.
Tips for Success
- Ensure all butter and eggs are truly at room temperature for the best texture and to prevent the batters from seizing.
- For perfectly clean slices, use a sharp chef’s knife and wipe it clean with a damp cloth between cuts.
- If the top is browning too quickly before the center is set, loosely tent the pan with aluminum foil for the last 10-15 minutes of baking.
Storage & Reheating
Store cooled Brookies in an airtight container at room temperature for up to 4 days or in the refrigerator for up to a week. For a warm, gooey treat, reheat individual bars in the microwave for 10-15 seconds.
FAQ
Can I use one type of sugar for both layers?
No, the specific sugars listed (granulated and brown sugar in the cookie layer) are crucial for achieving the distinct textures of a fudgy brownie and a chewy cookie.
Why are there two separate sets of flour, butter, and eggs?
This recipe makes two complete, separate batters—one for brownies and one for cookies—that are layered together. The ingredients are listed in the order you make them.
Can I use a different pan size?
A 9×13-inch pan is recommended. A smaller pan will result in thicker, potentially undercooked bars, while a larger pan will make thinner bars that may overbake.
My cookie dough layer seems hard to spread. What should I do?
The cookie dough is thick. It’s easiest to flatten small pieces with your hands and place them evenly over the brownie batter, then gently press and pat them together to form a layer.
Can I freeze Brookies?
Yes, they freeze beautifully. Wrap individual bars tightly in plastic wrap and place them in a freezer bag for up to 3 months. Thaw at room temperature or briefly microwave.
What if I don’t have parchment paper?
You can grease the pan very well, but parchment paper is highly recommended. It guarantees clean removal and prevents the bottom brownie layer from sticking.

