If you’re craving something outrageously chocolatey, these Slutty Brownies are the dessert of your dreams. Imagine chewy cookie dough, a layer of creamy Oreos, and rich, fudgy brownies all baked together into one irresistible treat. Each bite offers a mix of crunchy, gooey, and soft textures that will make everyone smile. The best part is how easy they are to make in under an hour with simple ingredients. Perfect for bake sales, weekend treats, or whenever that sweet craving hits.

Table of Contents
Why You’ll Love This Recipe
These Slutty Brownies are pure indulgence with every bite. The layers bake into one delicious harmony of chewy cookie dough, creamy Oreos, and gooey brownie. They’re simple to prepare with no fancy tools required and guaranteed to impress any crowd. You can easily customize them with different cookies or chocolates, and they store beautifully for make-ahead desserts. Whether served warm or chilled, they’re always a hit.
Ingredients You’ll Need
For the Cookie Dough Layer
Softened butter gives richness, while brown sugar adds moisture and flavor. Granulated sugar adds sweetness, and the egg with vanilla keeps it smooth. Flour, salt, baking powder, and baking soda give structure. Oats add texture, and chocolate chips melt into every bite.
For the Cookie Layer
You’ll need 18 Oreo cookies or your favorite sandwich cookies. You can mix regular and flavored ones for fun variety. Break a few to fit across the pan evenly.
For the Brownie Layer
Melted butter, cocoa, and espresso powder create a deep chocolate base. Brown and white sugars balance sweetness. Add eggs and vanilla for glossiness, then flour, salt, and baking powder for structure. Chocolate chips add extra gooey richness.
Step-by-Step Instructions
Prepare the Cookie Dough Base
Beat butter with both sugars until light and fluffy. Add the egg and vanilla, then mix until combined. In a separate bowl, combine flour, salt, baking powder, and baking soda. Add the dry mix gradually to the butter mixture. Fold in chocolate chips and oats. Spread half the dough into a lined 9×9 pan and chill the rest.
Add the Oreo Layer
Place Oreos on top of the cookie dough in a single layer. Break some cookies to cover gaps evenly.
Make the Brownie Batter
Mix melted butter with sugars, eggs, and vanilla until glossy. Combine cocoa, flour, espresso powder, salt, and baking powder separately. Stir the dry mix into the wet mixture until just blended, then fold in chocolate chips. Spread this over the Oreos.

Bake and Cool
Bake at 350°F for 35 to 40 minutes until the center is set and edges pull slightly from the pan. Cool completely for about 2 hours before slicing for neat, layered squares.

Tips for Perfect Slutty Brownies
Mix the brownie batter vigorously after adding eggs to get that shiny, crackly top. Chill the cookie dough before layering to make spreading easier. For clean slices, wait until brownies are fully cool before cutting. Use a hot knife for perfect edges. To vary flavor, use dark or milk chocolate chips or swap Oreos for caramel-filled cookies.
Storage and Make-Ahead Options
Store brownies in an airtight container at room temperature for up to 3 days or refrigerate for a week. For longer storage, freeze slices and thaw before serving. Leftover cookie dough can be scooped and frozen, then baked directly for quick cookies later.
Variations and Custom Ideas
Try swapping Oreos for caramel-filled chocolates or peanut butter cups. Mix different chocolate types for unique layers. You can even add nuts for crunch or sprinkle sea salt flakes for a sweet-salty balance. For a festive touch, use peppermint Oreos during the holidays.
Serving Suggestions
Serve these brownies slightly warm with vanilla ice cream for an incredible dessert. They’re also amazing chilled for clean bars. Pair them with coffee, milk, or use them to build brownie sundaes for parties.
Other Recipes You May Enjoy
- best fudgy chewy brownies
- peppermint brownies for the holidays
- chocolate mousse brownies indulgent dessert
- chewy maple cinnamon cookies
- chocolate chip cookie bars
- air fryer chocolate chip cookies
Conclusion or Final Thoughts
These Slutty Brownies are the ultimate dessert for chocolate lovers. The rich cookie dough, creamy Oreo center, and fudgy brownie topping make each bite unforgettable. They’re fun to bake, easy to customize, and always a showstopper. Try your own twist and share your results online. For more dessert inspiration, visit Pinterest for creative brownie ideas that you’ll love making again and again.
Slutty Brownies
Equipment
- 9×9 inch baking pan Yields 16 squares
- Parchment paper For easy removal and clean edges
- Mixing bowls
- Hand mixer or stand mixer For creaming butter and sugars
- Measuring cups and spoons
- Whisk and spatula
- Sharp knife Dip in hot water and wipe for clean slices
Materials
- 1 cup Unsalted butter, softened (cookie dough)
- ¾ cup Brown sugar, packed (cookie dough)
- ½ cup Granulated sugar (cookie dough)
- 1 Large egg (cookie dough)
- 2 tsp Vanilla extract, divided use
- 2 cups All purpose flour (cookie dough)
- 1 ¼ tsp Kosher salt, divided use
- ½ tsp Baking powder (cookie dough)
- ¼ tsp Baking soda (cookie dough)
- 1 cup Semi sweet chocolate chips (cookie dough)
- ½ cup Quick oats (cookie dough)
- 18 Chocolate sandwich cookies such as Oreos (cookie layer)
- ¾ cup Unsalted butter, melted (brownie)
- ½ cup Brown sugar, packed (brownie)
- ½ cup Granulated sugar (brownie)
- 2 Large eggs (brownie)
- ⅔ cup Cocoa powder, unsweetened (brownie)
- ½ cup All purpose flour (brownie)
- 2 tsp Espresso powder (brownie)
- ½ tsp Baking powder (brownie)
- ½ tsp Kosher salt (brownie)
- ½ cup Semi sweet chocolate chips (brownie)
Instructions
- Preheat oven to 350°F. Line a 9×9 inch pan with parchment, leaving overhang. Set aside.
- Cream softened butter with brown sugar and granulated sugar until fluffy. Beat in egg and 1 tsp vanilla.
- Whisk flour, 1 tsp salt, baking powder, and baking soda. Gradually mix into creamed mixture. Fold in chocolate chips and oats.
- Spread half the cookie dough evenly in the prepared pan. Chill remaining dough for another use.
- Arrange Oreos in a snug single layer over the dough, breaking a few to fill gaps.
- Whisk melted butter, brown sugar, granulated sugar, eggs, and 1 tsp vanilla until glossy.
- In a bowl, whisk cocoa, flour, espresso powder, baking powder, and 1/4 tsp salt. Stir into wet mix just to combine, then fold in chocolate chips.
- Spread brownie batter over Oreos. Bake 35 to 40 minutes until the center is set and a few moist crumbs cling to a tester.
- Cool completely in the pan for about 2 hours. Lift out using parchment and slice into 16 squares.

