Alright, let’s dive into one of my all-time favorite desserts to whip up: Brown Butter Slutty Brownies! Yes, you read that right—these decadent treats have a cheeky name, but trust me, the flavor is all class. These Slutty Brownies are a glorious trifecta of sweet indulgence, combining cookie dough, Oreos, and brownies into one gooey, irresistible square.
Ingredients:
Oreos: Oreo layer introduces a playful twist to the brownies. These iconic cookies bring a crunchy, creamy element that surprises and delights with every mouthful. Positioned between the cookie dough and brownie layers, the Oreos create a textural contrast while infusing their classic chocolate and cream flavor into the overall profile.
Brownies: Brownie layer tops off these slutty brownies with its rich, fudgy decadence. Using a high-quality box mix like Ghirardelli ensures consistent results without sacrificing taste. The brownie layer ties everything together, melding seamlessly with the cookie dough and Oreos to deliver a luscious, indulgent treat that’s as visually appealing as it is delicious.
Why You’ll Love These

Brown Butter Slutty Brownies Recipe
Video
Ingredients
Cookie Dough Layer
- Homemade or store-bought cookie dough enough to cover the bottom of an 8×8-inch dish in a 1/2-inch thick layer
Oreo Layer
- 16 oreo cookies 4 rows of 4
Brownie Layer
- 1 box brownie mix I love Ghirardelli
- Ingredients required by the brownie mix (substitute water with milk and oil with brown butter for extra
Instructions
- Preheat the Oven: Preheat your oven to 325°F (165°C).
- Preheat your oven to 325°F (165°C).
- Prepare the Pan: Line an 8×8-inch baking dish with parchment paper or grease it with oil or butter.
- Line an 8×8-inch baking dish with parchment paper or grease it with oil or butter.
- Cookie Dough Layer: Press the cookie dough into an even layer at the bottom of the prepared baking dish, about 1/2 inch thick.
- Press the cookie dough into an even layer at the bottom of the prepared baking dish, about 1/2 inch thick.
- Oreo Layer: Place 16 Oreo cookies on top of the cookie dough layer in a grid pattern (4 rows of 4).
- Place 16 Oreo cookies on top of the cookie dough layer in a grid pattern (4 rows of 4).
- Brownie Layer: Prepare the brownie mix according to the package instructions, but substitute the water with milk and the oil with brown butter. Pour the brownie batter over the Oreos, spreading it evenly to cover all the cookies.
- Prepare the brownie mix according to the package instructions, but substitute the water with milk and the oil with brown butter.
- Pour the brownie batter over the Oreos, spreading it evenly to cover all the cookies.
- Bake: Place the baking dish in the preheated oven and bake according to the brownie mix instructions, typically at 325°F. However, extend the baking time by about 15 minutes. For the Ghirardelli mix, this means baking for about an hour.
- Place the baking dish in the preheated oven and bake according to the brownie mix instructions, typically at 325°F. However, extend the baking time by about 15 minutes. For the Ghirardelli mix, this means baking for about an hour.
- Cool and Serve: Allow the slutty brownies to cool completely in the pan before cutting them into squares. Enjoy!
- Allow the slutty brownies to cool completely in the pan before cutting them into squares. Enjoy!
Nutrition
Storage Instructions
- Store any leftover slutty brownies in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week.
- Reheating: To enjoy them warm, microwave individual brownies for 10-15 seconds or reheat in a 350°F oven for 5-10 minutes.
Conclusion
I hope you love making and devouring these slutty brownies as much as I do! They’re always a hit, whether you’re taking them to a potluck or enjoying them at home. Don’t forget to share your creations with me on Instagram @munchiesbymallory and use the hashtag #MunchiesByMallory. Happy baking!







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