Brown Butter Brookies
Imported from TikTok
1h 45mMedium16 servings

Brown Butter Brookies

Fudgy brownies layered with the best brown butter chocolate chip cookies. The ultimate decadent dessert.

Mise turned a cooking video on TikTok into this written step-by-step recipe — 15 ingredients, 6 steps, 1h 45m, with a generated photo for every step.

Time105min
LevelMedium
Servings16
Method 6 steps
01

Make the cookies first: Brown the unsalted butter and let it cool slightly. In a bowl, whisk 1 cup of brown sugar and 1/2 cup of white sugar with the browned butter until glossy. Add 2 eggs and the vanilla bean paste, and mix. Sift in 2 cups of all-purpose flour, baking soda, baking powder, and salt until just combined, then fold in 2 cups of chocolate chips. Chill the dough for at least 1 hour.

02

Preheat oven to 350°F (175°C) and line an 8x8 pan with parchment paper.

03

Make brownie batter: Melt the salted butter with 1 cup of chocolate chips, then whisk in the olive oil and cocoa powder. In another bowl, whisk 1/2 cup of brown sugar, 1/4 cup of white sugar, 2 eggs, and the vanilla extract. Combine this with the chocolate mixture, then fold in 3/4 cup of flour until just mixed.

04

Assemble: Pour half the brownie batter into the pan and spread evenly. Add chunks of the chilled cookie dough across the surface (don’t cover fully). Pour the remaining brownie batter over the top, then finish with more cookie dough pieces pressed lightly on top. Lastly, top with the chocolate chunks.

05

Bake for 30–40 minutes, until edges are set and center is slightly soft. A toothpick should come out with moist crumbs, not wet batter. Keep baking if needed.

06

Cool completely before slicing to ensure clean layers.

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Notes

These brookies merge the chewy texture of a browned butter chocolate chip cookie with the dense richness of a fudgy brownie. The defining characteristic of this version is the browning of the butter for the cookie layer, which adds a nutty complexity that balances the sweetness of the chocolate. By layering the dough and batter rather than swirling them, you achieve distinct textures and a striking visual contrast in every slice. It is a substantial treat suited for celebrations or afternoon gatherings where a decadent handheld dessert is required.

On the plate, expect a moist, multi-layered square with a crackly top and a soft center. The use of both chocolate chips and chunks provides varying levels of melt, while the inclusion of olive oil in the brownie batter ensures the crumb remains tender for days. The high sugar content helps create the shiny, wafer-thin crust typical of high-quality brownies, while the chilled cookie dough provides enough structure to prevent the two layers from merging into a single mass during the baking process.

Before you start

  • When browning the butter in step one, look for a deep amber color and a nutty aroma. Remove from heat immediately to prevent the solids from burning.
  • Do not skip the one hour chilling time for the cookie dough. This prevents the dough from melting too quickly into the brownie batter during baking.
  • Whisk the sugar and eggs vigorously for several minutes before adding the dry ingredients. This aeration creates the signature shiny, crackly top on the brownie portion.
  • Test for doneness at thirty minutes. The center should wobble slightly when the pan is moved, as the residual heat will finish setting the brookies while cooling.

Swaps that work

  • Replace vanilla bean paste with an equal amount of pure vanilla extract if you prefer a smoother texture without visible vanilla specks.
  • Substitute semi-sweet chocolate chunks with bittersweet chocolate chunks to reduce the overall sweetness and provide a more intense cocoa flavor profile.
  • Swap salted butter in the brownie batter for unsalted butter plus a quarter teaspoon of fine sea salt to control the sodium levels.

Keeping it

Store these brookies in an airtight container at room temperature for up to four days. For longer storage, wrap individual squares in plastic wrap and freeze them for up to three months. To reheat, microwave a single square for fifteen seconds or warm it in a three hundred degree oven for five minutes to restore the fudge-like texture. While they are safe to eat immediately, they are best after cooling for two hours.

Questions

Can I make the cookie dough further in advance?

Yes, the cookie dough can be prepared and refrigerated for up to forty-eight hours before assembly. This extra time allows the flour to fully hydrate and the flavors to deepen. If the dough becomes too hard to scoop, let it sit at room temperature for ten minutes before assembling.

Why did my layers merge together instead of staying separate?

This typically occurs if the brownie batter is too warm or the cookie dough is too soft when assembled. Ensure the melted butter and chocolate mixture has cooled significantly before combining it with the eggs, and always chill the cookie dough for the full hour to maintain structural integrity.

How do I get clean, sharp edges when slicing?

Wait until the brookies are completely cold before cutting. For the cleanest lines, refrigerate the pan for two hours after it reaches room temperature. Use a large chef's knife dipped in hot water and wiped dry between every single cut to prevent the fudge from sticking.

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