Ultimate Cookie Oreo Brownies – The Indulgent Triple-Layer Dessert Dream
If you’ve ever stood in front of the dessert table unable to decide between a cookie, an Oreo, or a brownie — this recipe has your back. Ultimate Cookie Oreo Brownies are the answer to every sweet craving, a decadent triple-layer masterpiece that brings together buttery cookie dough, creamy Oreos, and rich, fudgy brownies in one glorious bite.
These bars aren’t just brownies — they’re a dessert experience. Each layer complements the next: the soft chew of chocolate chip cookie dough at the bottom, the crunchy creaminess of Oreos in the middle, and the dense, chocolatey richness of brownies on t
op. They’re gooey, slightly crisp on the edges, and outrageously satisfying.
Whether you’re baking for a potluck, gifting holiday treats, or simply treating yourself after a long week, these brownies are guaranteed to impress. They look like they came straight from a bakery display but are surprisingly easy to make at home with pantry staples.
Ingredients:
For the Cookie Layer:
- ½ cup unsalted butter, softened
- ½ cup brown sugar, packed
- ¼ cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 ¼ cups all-purpose flour
- ½ teaspoon baking soda
- ¼ teaspoon salt
- 1 cup semi-sweet chocolate chips
For the Oreo Layer:
- 16 Oreo cookies (whole, not crushed)
For the Brownie Layer:
- ½ cup unsalted butter
- 1 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ⅓ cup cocoa powder
- ½ cup all-purpose flour
- ¼ teaspoon salt
- ½ teaspoon baking powder
For Garnish (Optional):
- Extra Oreos (crushed or halved)
- Melted chocolate or chocolate ganache drizzle
Instructions:
- Preheat the Oven:
Preheat your oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper, leaving some overhang on the sides for easy removal. - Make the Cookie Dough Layer:
In a large mixing bowl, cream together butter, brown sugar, and granulated sugar until light and fluffy. Add the egg and vanilla, beating until smooth.
Stir in the flour, baking soda, and salt until combined, then fold in the chocolate chips.
Press this cookie dough evenly into the bottom of the prepared pan. - Add the Oreo Layer:
Arrange the Oreo cookies in a single layer directly on top of the cookie dough. You’ll typically fit about 16 Oreos in a 4×4 grid. Don’t press too hard — they’ll settle during baking. - Prepare the Brownie Batter:
In a separate saucepan, melt the butter over low heat. Remove from the stove and stir in sugar, eggs, and vanilla. Add cocoa powder, flour, salt, and baking powder, stirring just until combined.
Pour the brownie batter evenly over the Oreos, spreading it out to cover the entire pan. - Bake:
Bake for 35–40 minutes, or until the top is set and a toothpick inserted in the center comes out mostly clean (a few moist crumbs are perfect).
Be careful not to overbake — the middle should stay slightly gooey for that perfect fudgy texture. - Cool and Slice:
Allow brownies to cool completely in the pan before lifting them out with the parchment paper overhang. Slice into squares using a sharp knife, cleaning the blade between cuts for neat edges. - Optional Decoration:
Drizzle melted chocolate or ganache over the top and sprinkle with crushed Oreos for an extra bakery-worthy finish.
Tips & Tricks
- Use room-temperature ingredients: It ensures smooth blending and even baking.
- Don’t overmix the brownie batter: Stir just until combined for the best fudgy texture.
- Line your pan with parchment paper: Makes for easy removal and cleaner slices.
- Let them cool fully before cutting: The layers set as they cool — patience is rewarded!
- Chill for clean layers: For the perfect layered look, chill for 30 minutes before slicing.
Variations
- Peanut Butter Oreo Brownies: Add 2 tablespoons of peanut butter to the cookie layer or swirl it into the brownie batter.
- Mint Chocolate Version: Use mint Oreos and add ½ teaspoon peppermint extract to the brownie batter.
- Salted Caramel Twist: Drizzle salted caramel sauce between the Oreo and brownie layers before baking.
- White Chocolate Chip Cookie Base: Swap the semi-sweet chips for white chocolate chips for a lighter contrast.
Ultimate Cookie Oreo Brownies
Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C). Line a 9×9-inch pan with parchment paper.
- Prepare the cookie layer and press evenly into pan.
- Arrange Oreos on top of cookie dough in a single layer.
- Prepare brownie batter and pour over Oreos.
- Bake for 35–40 minutes until set on top but still slightly fudgy in center.
- Cool completely before slicing into squares.
Notes
Serving Suggestions
- Serve warm with a scoop of vanilla or cookies-and-cream ice cream.
- Dust with powdered sugar and serve with hot coffee or cocoa for a cozy treat.
- Cut into small squares and pack in festive boxes as edible gifts.
- Top with a dollop of whipped cream and crushed Oreos for a fancy dessert presentation.
These brownies taste even better the next day as the flavors meld together, making them a perfect make-ahead dessert for parties and holidays.
Storage Information
- Room Temperature: Store in an airtight container for up to 4 days.
- Refrigerator: Keeps up to 1 week when chilled; serve slightly warmed for best texture.
- Freezer: Wrap individual squares tightly in plastic wrap, then freeze for up to 3 months. Thaw at room temperature before serving.
FAQ
Can I use boxed brownie mix?
Yes! Substitute the homemade brownie layer with one box of your favorite brownie mix prepared according to package directions.
Do I need to chill the cookie dough before layering?
No, it spreads just fine as-is — but if it’s too soft, chill for 10 minutes for easier handling.
Can I make these gluten-free?
Absolutely. Use gluten-free flour blends for both the cookie and brownie layers and gluten-free Oreos.
How do I make them extra gooey?
Slightly underbake the brownies (about 32–33 minutes) and let them cool completely before cutting.
History / Fun Facts
The concept of combining cookies, Oreos, and brownies — often called “slutty brownies” in internet lore — originated from a viral recipe in the early 2010s that swept through food blogs and Pinterest boards. Home bakers loved the over-the-top indulgence of stacking three classic desserts into one outrageous creation.
The beauty of these Ultimate Cookie Oreo Brownies lies in that same spirit of excess — it’s dessert without compromise. Every bite delivers a nostalgic crunch, chewy cookie sweetness, and rich, fudgy chocolate decadence. They’ve become a beloved bake-sale favorite, a birthday treat, and a holiday showstopper in kitchens everywhere.
So the next time you can’t decide between cookies, Oreos, or brownies — don’t choose. Bake them all together. Because sometimes, more really is more.
