Brown Butter Brookies

Why You’ll Love This Recipe

I enjoy this recipe because it brings together two classic desserts in one pan. The brownies stay rich and gooey, while the cookie dough bakes into soft, chewy layers filled with melted chocolate chips. I also like how the brown butter adds a warm caramel-like flavor that makes these brookies taste extra special.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

For the Chocolate Chip Cookie Dough

• 14.5 tablespoons salted butter (206 grams)
• 3/4 cup dark brown sugar, packed (163 grams)
• 3/4 cup granulated sugar (156 grams)
• 2 large eggs, room temperature
• 1 and 1/2 teaspoons vanilla extract
• 3 cups all-purpose flour (390 grams)
• 1 teaspoon baking soda
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1 and 1/2 cups chocolate chips (270 grams)

For the Brownie Batter

• 3/4 cup salted butter, cubed (170 grams before browning)
• 4 ounces semi-sweet chocolate, chopped
• 1/4 cup vegetable oil (55 grams)
• 3/4 cup cocoa powder (63 grams)
• 3 large eggs, room temperature
• 1 large egg yolk, room temperature
• 3/4 cup granulated sugar (158 grams)
• 1 and 1/2 cups powdered sugar (174 grams)
• 2 teaspoons vanilla extract (10 grams)
• 1/4 teaspoon salt
• 1/2 cup all-purpose flour (65 grams)
• Pinch of espresso powder, optional
• 1 cup semi-sweet chocolate chips
• Flaky sea salt, optional

Directions

I start by preheating the oven to 350°F. I spray a 9×13-inch metal baking pan with nonstick spray and line it with parchment paper so the brookies are easier to remove and slice later.

To make the chocolate chip cookie dough, I melt the butter in a large mixing bowl and whisk in both sugars. I add the eggs and vanilla extract, whisking until smooth and combined. Then I stir in the flour, baking soda, baking powder, and salt before folding in the chocolate chips.

I divide the cookie dough into two equal portions. I press one half into the prepared pan, then carefully lift it out using the parchment paper and set it aside. I leave the remaining dough in the bowl for later.

For the brown butter, I place the cubed butter into a saucepan over medium heat. Once melted, I reduce the heat slightly and continue cooking while stirring frequently. The butter becomes foamy and turns a deep golden brown with a nutty aroma after a few minutes.

Once browned, I stir the chopped chocolate into the butter until melted. Then I whisk in the vegetable oil and cocoa powder and let the mixture cool slightly.

In a large mixing bowl, I whisk together the eggs, egg yolk, and granulated sugar for about 1 to 2 minutes until smooth. I check the mixture between my fingers to make sure the sugar has dissolved. Then I whisk in the powdered sugar, vanilla, and salt.

When the chocolate mixture is warm but no longer extremely hot, I whisk it into the egg mixture. I fold in the flour, espresso powder if using, and chocolate chips until combined.

To assemble the brookies, I spread slightly more than half of the brownie batter into the lined pan. I place the prepared cookie dough layer on top and remove the parchment paper. Then I spread the remaining brownie batter over the cookie dough.

I shape the remaining cookie dough into thick discs and place them on top of the brownie layer. I sometimes press extra chocolate chips into the surface for more chocolate in every bite.

I bake the brookies for 38 to 44 minutes until the cookie top is golden and the brownies have a shiny surface. A toothpick inserted into the brownie section should come out with moist crumbs but not wet batter.

After baking, I let the brookies cool in the pan for 1 to 2 hours before slicing. I like sprinkling flaky sea salt on top before serving.

Servings and timing

This recipe makes 16 servings.

• Prep Time: Approximately 30 minutes
• Cook Time: 38 to 44 minutes
• Cooling Time: 1 to 2 hours
• Total Time: About 1 hour and 15 minutes, plus cooling time

Variations

I sometimes use dark chocolate chips for a richer flavor or milk chocolate chips for extra sweetness. When I want even more texture, I add chopped walnuts or pecans to the brownie batter. I can also swirl caramel into the brownie layer or add peanut butter chips for a different flavor combination.

storage/reheating

I store the brookies in an airtight container at room temperature for 3 to 4 days. They stay soft and chewy, especially when tightly covered.

For reheating, I warm individual slices in the microwave for a few seconds because the chocolate becomes perfectly gooey again. I also like serving them slightly warm with vanilla ice cream.

FAQs

What are brookies?

Brookies are a dessert combination of brownies and chocolate chip cookies baked together into one bar.

Why is brown butter important in this recipe?

I use brown butter because it adds a deep nutty and caramel-like flavor that makes the brownies taste richer.

Can I freeze brookies?

Yes, I can freeze sliced brookies in an airtight container for up to 3 months. I thaw them at room temperature before serving.

How do I know when the brookies are done baking?

I check for golden cookie tops and moist crumbs on a toothpick inserted into the brownie layer. I avoid overbaking so the brownies stay fudgy.

Can I use store-bought cookie dough?

Yes, I can use store-bought cookie dough if I want to save time, though homemade dough gives the best flavor and texture.

Conclusion

Brown Butter Brookies are one of my favorite desserts because they combine chewy cookies and fudgy brownies into one irresistible treat. I love the rich flavor from the brown butter and the layers of melted chocolate throughout every bite. These brookies are perfect for parties, family gatherings, or anytime I want an extra indulgent homemade dessert.

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