There’s something truly magical about a recipe that brings together two of your favorite things. For me, that magic happens when rich, fudgy brownies meet chewy, golden chocolate chip cookies. It’s like a warm hug from your oven! These Brown Butter Brookies have become a go-to in my kitchen whenever I want to impress without too much fuss, or just treat myself to something extra special.
Why You’ll Love These Brown Butter Brookies
- They’re the best of both worlds: fudgy brownie and chewy chocolate chip cookie in one bite!
- The brown butter adds an incredible depth of nutty, caramel flavor that makes them irresistible.
- Surprisingly easy to make, even though they look super impressive.
- Perfect for sharing at parties, potlucks, or just a cozy night in with your favorite people.
Ingredients You’ll Need
- Salted Butter: Using salted butter in both the cookies and brownies balances the sweetness and enhances all the flavors. If you only have unsalted, just add an extra pinch of salt to each component.
- Dark Brown Sugar: This is key for that deep, molasses-rich flavor and extra chewiness in your cookies. Don’t swap it for light brown sugar if you can help it!
- Cocoa Powder: Unsweetened cocoa powder is what gives the brownies their intense chocolate flavor. Any good quality unsweetened cocoa will work beautifully.
- Semi-Sweet Chocolate: For both melting into the brownie batter and as chocolate chips. I love a good quality bar chopped up, but standard semi-sweet chocolate chips are perfectly fine too!
- Vegetable Oil: A little bit of oil in the brownie batter helps make them extra fudgy and moist.
- Espresso Powder: This is optional, but trust me, it doesn’t make your brownies taste like coffee! It simply deepens and enhances the chocolate flavor, making it richer.
How to Make Brown Butter Brookies Step by Step
First things first, let’s get your oven ready! You’ll want to preheat it to 350°F (175°C). Then, grab a 9×13 inch metal pan, spray it with nonstick spray, and line it with parchment paper. This parchment paper is your secret weapon for easy lifting and slicing later, so don’t skip it!
For the cookie layer, you’ll start by melting butter in a bowl, then whisking in the sugars, eggs, and vanilla. It should be nice and smooth. Then, you’ll stir in your dry ingredients and those lovely chocolate chips. Divide this dough in half. Press one half into your prepared pan, then lift it out with the parchment paper and replace it with a fresh piece. The remaining cookie dough stays in the bowl for later – don’t worry, we’ll get to it!
Now for the star of the show: brown butter! Melt cubed butter in a saucepan over medium heat, stirring occasionally. Once it’s melted, reduce the heat to medium-low and keep stirring. It will get foamy, then bubbly, and then, the magic happens! It’ll turn a beautiful golden color and smell wonderfully nutty and caramely. This usually takes about 3-6 minutes after melting. Once it’s browned, stir in your semi-sweet chocolate until it’s all melted, then whisk in the vegetable oil and cocoa powder. Let this cool down a bit.
In a separate bowl, whisk together eggs, egg yolk, and granulated sugar for a minute or two until the sugar is dissolved – you can test this by rubbing a little between your fingers. No grit? You’re good! Whisk in the powdered sugar, vanilla, and salt. Now, check that chocolate mixture; it should be warm but not piping hot. Whisk that into the egg mixture. Finally, fold in the flour and that optional espresso powder, then your chocolate chips. You’re almost there! Spread a little more than half of this brownie batter into your pan. Lay that sheet of cookie dough you prepped earlier on top, peeling off the extra parchment paper. Spread the rest of the brownie batter over the cookie dough. Take the remaining cookie dough from the bowl, form thick discs, and place them on top of the brownie batter. If you want, press a few extra chocolate chips into any bare spots on the cookie dough.
My Top Tips for Success
- I always make sure my eggs are at room temperature. It helps them incorporate better into the batter, leading to a smoother texture.
- Brown butter is a game-changer! Don’t rush it; watch it closely and stir frequently to get that perfect nutty aroma without burning.
- When measuring flour, spoon it into your measuring cup and then level it off. This prevents you from adding too much flour, which can make your brookies dry.
- Trust me on this one: do not overbake! A toothpick in the brownie section should come out with moist crumbs, not wet batter. Overbaking leads to dry brownies.
- Lining the pan with parchment paper is a lifesaver for easy removal and clean slices. Leave an overhang on the sides!
- Cooling is crucial! Let your brookies cool completely in the pan on a wire rack for at least 1-2 hours before slicing. This helps them set up nicely.
Common Mistakes to Avoid
- Over-mixing the dough: Once you add the flour, mix just until combined. Over-mixing develops gluten, which can lead to tough cookies and brownies.
- Not browning the butter enough (or burning it): If you don’t brown it enough, you miss out on that amazing nutty flavor. If you burn it, it will taste bitter. Watch it closely and remove it from the heat as soon as it’s golden brown with a nutty smell.
- Skipping the parchment paper: Without parchment paper, it’s really hard to get the brookies out of the pan cleanly, and slicing becomes a messy chore.
- Slicing before cooling: If you try to slice these while they’re still warm, they’ll crumble and be a gooey mess. Patience is key for clean slices!
How to Store Brown Butter Brookies
- Room Temperature: 3-4 days in an airtight container.
- Freezer: Up to 3 months. Wrap individual bars tightly in plastic wrap, then place in a freezer-safe bag or container. Thaw at room temperature or warm gently in the microwave.
Frequently Asked Questions
What is brown butter?
Brown butter, also known as beurre noisette, is butter that has been gently cooked until its milk solids toast and turn a golden-brown color, giving it a rich, nutty, and slightly caramel-like flavor. It adds incredible depth to baked goods.
Can I use chocolate chips instead of chopped semi-sweet chocolate for the brownie batter?
Yes, absolutely! While chopped chocolate melts a bit smoother, semi-sweet chocolate chips work perfectly fine and are a convenient substitute.
Why are my brookies dry?
The most common reason for dry brookies is overbaking. Keep a close eye on them towards the end of the baking time and remove them from the oven when a toothpick inserted into the brownie section comes out with moist crumbs, not wet batter.
Can I make these in a different sized pan?
You can, but you’ll need to adjust the baking time. A smaller pan will result in thicker brookies that need more time, while a larger pan will mean thinner brookies that bake faster. Keep a close eye on them!
Is espresso powder really necessary?
No, it’s optional, but I highly recommend it! It doesn’t make the brownies taste like coffee; instead, it enhances and deepens the chocolate flavor, making it taste even richer and more complex.
I hope these Brown Butter Brookies bring as much joy to your kitchen as they do to mine. There’s something so satisfying about creating such a delightful treat! Give them a try, and let me know how they turn out – I’d love to hear from you!
PrintBrown Butter Brookies
Indulge in the ultimate dessert mashup: fudgy brown butter brownies layered with chewy chocolate chip cookies, baked to perfection.
- Prep Time: 30
- Cook Time: 44
- Total Time: 154
- Yield: 12-15 servings
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- For the Chocolate Chip Cookies:
- 14.5 tbsp salted butter 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 salt
- 1 and 1/2 cups chocolate chips 270 grams
- For the Brownies:
- 3/4 cup salted butter, cubed 170 grams before browning, 140 grams after
- 4 ounces semi-sweet chocolate, chopped 113 grams
- 1/4 cup vegetable oil 55 grams
- 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 10 grams
- 1/4 tsp salt
- 1/2 cup all-purpose flour, spooned & leveled or weighed out 65 grams
- pinch of espresso powder optional
- 1 cup semi-sweet chocolate chips 180 grams
- For Topping
- flaky sea salt, optional
Instructions
- Preheat your oven to 350℉ (175°C).
- Spray a 9×13 inch metal pan with nonstick spray.
- Line the pan with parchment paper, leaving an overhang on the sides for easy removal.
- Melt 14.5 tbsp (206g) salted butter in a large mixing bowl.
- Whisk in 3/4 cup (163g) dark brown sugar and 3/4 cup (156g) granulated sugar until combined.
- Add 2 large eggs and 1 and 1/2 tsp vanilla extract, and whisk until smooth, about 30-45 seconds.
- Stir in 3 cups (390g) all-purpose flour, 1 tsp baking soda, 1 tsp baking powder, and 1/2 tsp salt until just combined.
- Stir in 1 and 1/2 cups (270g) chocolate chips.
- Divide the cookie dough into two equal halves (about 640 grams each).
- Press one half of the cookie dough evenly into the prepared pan.
- Lift out the parchment paper with the pressed cookie dough and replace it with a new piece of parchment paper. Set this cookie dough layer aside.
- Leave the other half of the cookie dough in the bowl for later.
- Add 3/4 cup (170g) cubed salted butter to a medium saucepan over medium heat.
- Melt the butter, stirring occasionally.
- Once melted, reduce the heat to medium-low and continue cooking, stirring frequently.
- Cook until the butter is foamy, bubbly, and turns a deep golden shade with a nutty, caramely aroma (about 3-6 minutes after melting).
- Remove the brown butter from the heat.
- Stir 4 oz (113g) semi-sweet chocolate into the brown butter until completely melted.
- Whisk in 1/4 cup (55g) vegetable oil and 3/4 cup (63g) cocoa powder.
- Set the chocolate mixture aside to cool slightly.
- In a large mixing bowl, add 3 large eggs, 1 large egg yolk, and 3/4 cup (158g) granulated sugar.
- Whisk for about 1-2 minutes until the sugar is fully dissolved (test by rubbing a small amount between your fingers; it should feel smooth).
- Whisk in 1 and 1/2 cups (174g) powdered sugar, 2 tsp vanilla extract, and 1/4 tsp salt.
- Ensure the chocolate mixture is no longer piping hot (it will still be quite warm) and whisk it into the egg and sugar mixture.
- Fold in 1/2 cup (65g) all-purpose flour and a pinch of espresso powder (if using) until just combined.
- Fold in 1 cup (180g) semi-sweet chocolate chips.
- Spread slightly more than half of the brownie batter evenly in the bottom of your lined 9×13 inch pan.
- Carefully lay the reserved sheet of cookie dough on top of the brownie batter, removing the extra piece of parchment paper.
- Spread the remaining brownie batter evenly on top of the cookie dough layer.
- Form large, thick discs with the remaining cookie dough and place them on top of the brownie batter.
- Press extra chocolate chips into any bare spots on the cookie dough, if desired.
- Bake the assembled brookies for 38 to 44 minutes.
- The cookies should be golden, and the brownies should have a shiny top.
- A toothpick inserted into the center of a brownie spot should have some moist crumbs, but not wet batter.
- Do not overbake.
- Allow the brookies to cool completely in the pan on a wire rack for about 1-2 hours before slicing and serving.
- Sprinkle with flaky sea salt, if desired, before serving.
- Store leftover cooled bars in an airtight container at room temperature for 3-4 days.
Notes
Ensure your eggs are at room temperature for the best texture.
Do not rush the brown butter process; watch it closely for color and aroma.
Measure flour by spooning it into the cup and leveling it to avoid dry brookies.
For clean slices, let the brookies cool completely before cutting.
Espresso powder is optional but enhances the chocolate flavor without adding coffee taste.