A warm, gooey brownie juxtaposed with a soft, buttery cookie evokes memories of blissful childhood desserts. This recipe for Brown Butter Brookies combines rich brownies and irresistible chocolate chip cookies for a decadent treat that you can whip up in about an hour. The secret lies in the depth of flavor achieved by browning the butter, which intensifies the overall taste, resulting in a dessert that’s always a crowd-pleaser.
This recipe is perfect for anyone who loves the combination of cookies and brownies. It’s an ideal dessert for family gatherings, celebrations, or simply a cozy night in. Plus, you can store any leftovers in an airtight container for up to four days, perfect for sweet cravings throughout the week.
Why You’ll Love This Recipe
- Rich butter enhances the flavors of both the brownies and cookies.
- Two textures come together—chewy brownies and soft cookie layers.
- Easy to prepare in a single pan, making cleanup a breeze.
- Perfectly indulgent dessert for all occasions.
What You’ll Need
Gather your ingredients to get started on this delicious treat.
For the Cookie Dough
- 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 Batter
- 3/4 cup salted butter, cubed (170 grams before browning, 140 grams after)
- 4 ounces semi-sweet chocolate, chopped (Chocolate chips work, too)
- 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 for less saltiness.
Substitutions & Swaps
- Dark brown sugar with light brown sugar
- Granulated sugar with coconut sugar
- Semi-sweet chocolate with milk chocolate
- Vegetable oil with melted coconut oil
How to Make It
Follow these simple steps to create your Brown Butter Brookies.
Prep
Preheat your oven to 350℉. Spray a 9×13 metal pan with nonstick spray and line with parchment paper for easy removal.
Make the Chocolate Chip Cookie Dough
Melt the butter in a large mixing bowl. Whisk in the sugars until smooth (about 30-45 seconds). Stir in the eggs and vanilla, blending thoroughly. Add the dry ingredients, then mix in the chocolate chips last. Divide the dough into two equal halves (about 640 grams each). Press half of the dough into the prepared pan, then lift out that piece of parchment paper and replace it with a new piece. Set your layer of cookie dough aside and leave the rest in the bowl for later.
Brown the Butter
Add the cubed butter to a medium saucepan over medium heat. Melt the butter, stirring occasionally. Once melted, turn the heat to medium-low and continue cooking, stirring frequently, until the butter turns a deep golden shade and develops a nutty aroma (about 3-6 minutes).
Make the Brownie Batter
After browning the butter, stir in the semi-sweet chocolate until melted. Whisk in the vegetable oil and cocoa powder and let cool slightly. In a large mixing bowl, whisk together the eggs, egg yolk, and granulated sugar for about 1-2 minutes until fully dissolved. Next, incorporate the powdered sugar, vanilla, and salt. Ensure the chocolate mixture is warm (not hot) before whisking it into the egg/sugar mixture. Fold in the flour and optional espresso powder, then mix in the chocolate chips.
Assemble
Spread slightly more than half the brownie batter in the bottom of your lined pan. Lay the sheet of cookie dough on top, removing the extra parchment. Spread the remaining brownie batter over this. Form large, thick discs of the remaining cookie dough and set them on top of the batter. Press in extra chocolate chips if desired.
Bake
Bake the assembled brookies for 38 to 44 minutes. The cookies should be golden, and the brownies will have a shiny top. A toothpick inserted into a brownie section should emerge with some moist crumbs, not wet batter. Avoid over-baking!
Serve & Store
Allow the bars to cool in the pan on a wire rack for about 1-2 hours before slicing and serving. Optionally, sprinkle with flaky sea salt.
How to Store It
Fridge: Store cooled bars in an airtight container for 3-4 days.
Freezer: Yes, for long-term storage.
Reheat: Microwave for 10-15 seconds.
Tips for Best Results
- Ensure your butter has cooled slightly before mixing with eggs to avoid scrambling.
- Press dough down firmly but gently into the pan to ensure even baking.
- Use high-quality chocolate for richer flavor.
- Don’t skip the flaky salt; it elevates the dessert!
Serving Suggestions
- Enjoy with a scoop of vanilla ice cream on top.
- Pair with a rich coffee or espresso.
- Serve at family gatherings for a delightful dessert option.
