Brown Butter Brookies

There’s a magical moment when the aroma of warm, rich brownies fills the kitchen, blending perfectly with the sweet scent of freshly baked cookies. This delightful combination, known as Brown Butter Brookies, brings together two beloved desserts into one heavenly treat. With a total time of about 1 hour and 15 minutes, you’ll create a rich, indulgent experience that stands out for its unique brown butter flavor and chewy texture.

This recipe is perfect for anyone craving a deliciously sweet treat, whether for a family gathering, a friendly get-together, or simply to satisfy a late-night sweet tooth. The brookies can be made ahead and stored, allowing you to enjoy them at your convenience.

Why You’ll Love This Recipe

• The brown butter adds a deep, nutty flavor you won’t forget.
• The texture is a delightful blend of chewy cookies and fudgy brownies.
• It’s an impressive dessert that’s surprisingly easy to make.
• The combination of chocolate chips ensures every bite is decadent.

What You’ll Need

Gather the following ingredients to create your Brown Butter Brookies:

For the Cookie Layer

• 14.5 tbsp salted butter, melted (206 grams)
• 3/4 cup dark brown sugar, packed (163 grams)
• 3/4 cup granulated sugar (156 grams)
• 2 large eggs, at room temperature
• 1 and 1/2 tsp vanilla extract
• 3 cups all-purpose flour, spooned & leveled or weighed out (390 grams)
• 1 tsp baking soda
• 1 tsp baking powder
• 1/2 tsp salt
• 1 and 1/2 cups chocolate chips

For the Brownie Layer

• 3/4 cup salted butter, cubed (170 grams before browning, 140 grams after)
• 4 ounces semi-sweet chocolate, chopped (or chocolate chips)
• 1/4 cup vegetable oil (56 mL)
• 3/4 cup cocoa powder (63 grams)
• 3 large eggs, at room temperature
• 1 large egg yolk, at room temperature
• 3/4 cup granulated sugar (158 grams)
• 1 and 1/2 cups powdered sugar (174 grams)
• 2 tsp vanilla extract
• 1/4 tsp salt
• 1/2 cup all-purpose flour (65 grams)
• Pinch of espresso powder (optional)
• 1 cup semi-sweet chocolate chips
• Flaky sea salt, optional

Use unsalted butter if you prefer less salt.

Substitutions & Swaps

• Replace dark brown sugar with light brown sugar.
• Use any chocolate chips for a different flavor.
• Swap vegetable oil for melted coconut oil.
• Omit espresso powder for a sweeter brownie.

How to Make It

Begin your delicious journey with these steps:

Prep

Preheat your oven to 350℉. Spray a 9×13 metal pan with nonstick spray and line it with parchment paper for easy removal.

Make the Chocolate Chip Cookie Dough

Melt the butter in a large mixing bowl. Whisk in the sugars and then add the eggs and vanilla, blending until smooth for about 30-45 seconds. Stir in the dry ingredients, finally mixing in the chocolate chips or chunks. Divide the dough into two equal halves (about 640 grams each). Press half into the prepared pan, then remove and set aside the parchment. Keep the other half in the bowl for later.

Brown the Butter

Add cubed butter to a medium saucepan over medium heat. Melt it, stirring occasionally. Once melted, lower the heat to medium-low, stirring frequently until it turns golden brown and has a nutty aroma—this will take about 3-6 minutes.

Make the Brownie Batter

Once the butter is browned, stir in the chopped semi-sweet chocolate until melted. Then whisk in the vegetable oil and cocoa powder, allowing it to cool slightly. In a separate bowl, combine the eggs, egg yolk, and granulated sugar, whisking for about 1-2 minutes until dissolved. Check for sugar granules; if any remain, keep whisking. Mix in powdered sugar, vanilla, and salt. Once the chocolate mixture is warm but not hot, whisk it into the eggs and sugar mixture. Fold in the flour and optional espresso powder, then incorporate the chocolate chips.

Assemble

Spread slightly over half of the brownie batter in your lined pan. Place the cookie dough layer on top, removing the parchment. Spread the remaining brownie batter on top and form large, thick discs with the remaining cookie dough, placing them on top of the batter. Press extra chocolate chips into bare spots if desired.

Bake

Bake for 38 to 44 minutes, until golden on top with a shiny brownie surface. A toothpick inserted should come out with moist crumbs, not wet batter. Avoid overbaking!

How to Store It

Fridge: Store in an airtight container for 3-4 days.
Freezer: Yes, for up to 2 months if wrapped well.
Reheat: Microwave for 15-20 seconds until warm.

Tips for Best Results

• Ensure your eggs are at room temperature for better mixing.
• Stir the brownie batter just until combined; avoid overmixing for the fudgiest texture.
• Maintain careful timing during the browning process to prevent burning.
• Use a toothpick to check for doneness in the brownie layers.

Serving Suggestions

• Pair with a scoop of vanilla ice cream for extra indulgence.
• Serve warm with a drizzle of chocolate sauce for a decadent treat.
• Perfect for gatherings, picnics, or movie night snacks.