These slutty brownies are everything you want in a dessert: a chewy chocolate chip cookie base, a full layer of Oreos, and rich fudgy brownies baked right on top.
I made these for my sister Karla's birthday last year, and she actually gasped when she saw the layers. The cookie dough gets soft and gooey, the Oreos stay crunchy, and the brownie layer turns out deeply chocolatey and almost truffle-like. If you're looking for something truly over-the-top, try these Caramel Apple Cheesecake Bars Recipe or these Air Fryer Churro Bites, but honestly, nothing quite compares to the drama of slicing into these triple-layer beauties.
Why You'll Love This Slutty Brownies Recipe
This slutty brownies recipe checks all the boxes. You get three desserts in one pan, which means you can impress people without actually doing triple the work. The chocolate chip cookie layer adds that buttery, brown sugar sweetness. The Oreos bring crunch and their signature cookies-and-cream flavor. And the brownie layer? It's deeply chocolatey, fudgy, and rich enough to make you close your eyes on the first bite.
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Ingredients For Slutty Brownies Recipe
Here's what you'll need to make these from-scratch triple slutty brownies.
Cookie Dough Layer
Unsalted butter: Creamed with the sugars to create a soft, chewy cookie base. Make sure it's at room temperature so it whips up light and fluffy.
Brown sugar: Adds moisture and a deep, caramel-like sweetness to the cookie dough.
Granulated sugar: Balances the brown sugar and helps the dough spread slightly as it bakes.
Egg: Binds the dough together and adds richness.
All-purpose flour: Forms the structure of the cookie layer. Sifting it in helps avoid overmixing.
Baking soda: Gives the cookie dough a little lift and helps it bake evenly.
Salt: Enhances all the flavors and balances the sweetness.
Vanilla extract: Adds warmth and depth to the cookie dough.
Chocolate chips: Melt into gooey pockets throughout the cookie layer. Use semi-sweet or dark chocolate chips.
Oreo Layer
Oreo cookies: A full layer of classic Oreos adds crunch and that iconic cookies-and-cream flavor. You'll need about 16 cookies to cover the pan.
Brownie Layer
Dark chocolate: High-quality semi-sweet chocolate (like Lindt or Callebaut) makes the brownie layer extra fudgy and rich. Don't use chocolate chips here—bar chocolate melts better.
Unsalted butter: Melted with the chocolate for a smooth, glossy batter.
Eggs: Whipped with the sugar to create a light, airy texture before the chocolate goes in.
Granulated sugar: Sweetens the brownies and helps create that shiny, crackly top.
Brown sugar: Adds chewiness and extra moisture to keep the brownies fudgy.
Unsweetened Dutch-processed cocoa powder: Deepens the chocolate flavor and gives the brownies their rich, dark color.
All-purpose flour: Just enough to hold the brownies together without making them cakey.
Salt: A small amount enhances the chocolate flavor.
Note: US cup measurements are approximate. For best results, measure ingredients by weight using a digital scale.
See recipe card for quantities.
Instructions For Slutty Brownies Recipe
Here's how to make these indulgent Oreo cookie slutty brownies from scratch.
Preheat and prep: Preheat your oven to 175°C (350°F) with no fan. Lightly oil a 9-inch (23 cm) square brownie pan and line the bottom and sides with parchment paper so the brownies lift out easily later.
Cream the butter and sugars: Using an electric hand mixer, whip the room-temperature butter with the brown sugar and granulated sugar for several minutes until the mixture is light, fluffy, and pale in color.
Add egg and vanilla: Add the egg and vanilla extract and whip for about 1 minute until fully combined and smooth.
Mix in dry ingredients: Switch to a rubber spatula. Sift in the flour, salt, and baking soda, then fold gently until just combined. Don't overmix or the cookie layer will be tough.
Fold in chocolate chips: Gently fold in the chocolate chips until evenly distributed.
Press into pan: Spread the cookie dough evenly across the bottom of the prepared pan and smooth the surface with your hands or an offset spatula.
Add Oreos: Arrange the Oreo cookies evenly on top of the cookie dough. You'll need about 16 cookies to cover the layer.
Chill the base: Refrigerate the pan while you prepare the brownie batter. This helps the cookie dough firm up so it doesn't mix with the brownie layer.
Melt chocolate and butter: Gently melt the butter and dark chocolate together over a double boiler or carefully in the microwave, stirring often to avoid overheating. Let it cool slightly.
Whip eggs and sugar: In a separate bowl, whip the eggs with the granulated sugar and brown sugar using an electric mixer until the mixture is pale, fluffy, and has increased in volume. This should take about 5 to 7 minutes.
Combine wet ingredients: With the mixer on low speed, slowly add the melted chocolate-butter mixture to the egg mixture and mix until just combined.
Add dry ingredients: Sift in the flour, salt, and cocoa powder, then fold gently with a rubber spatula until everything is incorporated and smooth. Don't overmix.
Assemble the layers: Pour the brownie batter evenly over the chilled Oreo and cookie dough layer. Use an offset spatula to spread it gently to the edges.
Bake: Bake at 175°C (350°F) for 35 to 40 minutes, until the edges are set and the center looks slightly gooey but not raw. A toothpick inserted in the center should come out with a few moist crumbs.
Cool completely: Allow the slutty brownies to cool completely in the pan before slicing. This helps the layers set and makes cutting cleaner.
Substitutions and Variations
Oreos: You can swap regular Oreos for any flavor you like—mint, peanut butter, golden, or even double-stuffed. You can also skip the Oreos entirely and add an extra layer of cookie dough or brownie batter, though you'll lose that signature crunch.
Chocolate chips: Use semi-sweet, dark, or milk chocolate chips in the cookie dough depending on your preference. White chocolate chips work too if you want a sweeter contrast.
Dark chocolate: If you don't have bar chocolate, you can use high-quality chocolate chips, but bar chocolate melts more smoothly. Swap semi-sweet for bittersweet if you prefer a less sweet brownie.
Cocoa powder: Dutch-processed cocoa gives a richer, darker color, but natural cocoa powder works fine if that's what you have.
Gluten-free: Use a 1:1 gluten-free flour blend in both the cookie dough and brownie layers. The texture will be slightly different but still delicious.
Vegan: Use vegan butter, flax eggs (1 tablespoon ground flax + 3 tablespoons water per egg), and dairy-free chocolate. Choose vegan Oreos or a similar sandwich cookie.
Equipmen For Slutty Brownies Recipe
Digital oven thermometer: Ensures your oven is at the right temperature for even baking.
Digital scale: For accurate measurements, especially with the chocolate and butter.
Electric hand mixer: Whips the butter and sugar until fluffy and beats the eggs for the brownie layer.
Rubber spatula: For gently folding ingredients without overmixing.
Offset spatula: Helps spread the cookie dough and brownie batter evenly.
9-inch (23 cm) square brownie pan: The right size pan ensures your layers bake evenly and the slutty brownies aren't too thick or too thin.
Storage
Room temperature: Store leftover slutty brownies in an airtight container at room temperature for 2 to 3 days. They'll stay soft and fudgy.
Refrigerator: If you prefer your slutty brownies chilled and extra fudgy, store them in the fridge for up to 5 days. Let them come to room temperature before serving, or enjoy them cold.
Freezer: Wrap individual slutty brownie squares tightly in plastic wrap, then place them in a freezer-safe bag or container. Freeze for up to 3 months. Thaw at room temperature for about 30 minutes before serving.
Make-ahead: You can prepare the cookie dough layer and refrigerate it (covered) for up to 24 hours before assembling and baking. The slutty brownie batter is best made fresh.
Expert Tips for Perfect Slutty Brownies
Use room-temperature ingredients: Room-temperature butter and eggs mix more easily and create a better texture in both the cookie dough and brownie layers.
Don't overbake: These brownies are meant to be gooey and fudgy. They'll look slightly underdone in the center when you pull them out, but they'll continue to set as they cool. Overbaking will make them dry.
Chill the cookie dough layer: Refrigerating the cookie dough and Oreo layer before adding the brownie batter keeps the layers from mixing together too much.
Weigh your ingredients: Using a digital scale for the chocolate, butter, and flour gives you the most consistent results.
Let them cool completely: I know it's hard to wait, but cooling the slutty brownies completely makes them much easier to cut into clean squares.
Use parchment paper: Lining your pan with parchment makes it easy to lift the whole slab out and slice it on a cutting board.
FAQ
How long does it take for brownies to get done?
These slutty brownies take 35 to 40 minutes to bake at 350°F (175°C). The edges should look set and the center should be slightly gooey but not raw. Since these are layered brownies, they take a bit longer than regular brownies. Keep an eye on them after 35 minutes and use a toothpick to check doneness—it should come out with a few moist crumbs.
Is 20 minutes enough for brownies?
Not for this recipe. 20 minutes isn't enough time for the layers to bake through properly. The cookie dough and brownie batter need at least 35 minutes to set and develop that fudgy texture. If you pull them out too early, the center will be raw and the layers won't hold together when you slice them.
How long to cook the perfect brownie?
For these triple layer brownies, 35 to 40 minutes at 350°F (175°C) is the sweet spot. You want the edges to be set and pulling slightly away from the pan, while the center looks a little underdone. Remember, they'll continue to cook as they cool. If you like your brownies extra gooey, aim for 35 minutes. For a firmer texture, go closer to 40 minutes.
How long to cook brownies for them to be gooey?
To keep these brownies gooey and fudgy, bake them for 35 to 37 minutes. The center should still jiggle slightly when you shake the pan, and a toothpick inserted should come out with moist crumbs, not clean. Let them cool completely in the pan—they'll firm up just enough to slice but stay wonderfully gooey inside.
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Triple-Layer Oreo Cookie Dough Brownies
Ingredients
Equipment
Method
- Preheat the oven to 175°C / 350°F and lightly grease a square baking pan, then line it with parchment paper.
- Beat the softened butter with both sugars until pale and fluffy using an electric mixer.
- Blend in the egg and vanilla until fully incorporated.
- Sift the flour, baking soda, and salt into the bowl and gently fold until no dry streaks remain.
- Stir in the chocolate chips evenly through the dough.
- Press the cookie dough evenly into the prepared pan and smooth the surface.
- Place the Oreo cookies in a single layer on top of the dough and refrigerate the pan while preparing the brownie batter.
- Melt the butter and dark chocolate together gently until smooth, then let it cool slightly.
- Whip the eggs with both sugars until the mixture becomes pale and thick.
- Slowly mix the melted chocolate into the egg mixture on low speed until combined.
- Sift in the flour, cocoa powder, and salt, folding gently just until incorporated.
- Pour the brownie batter over the Oreo layer and smooth it evenly.
- Bake until the edges are set and the center remains slightly soft, then remove from the oven.
- Allow the brownies to cool completely in the pan before slicing.
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