Cookie Oreo Brownies – Rich, Gooey & Completely Irresistible

If you’ve never experienced a Slutty Brownie, get ready to fall in love with the most outrageous dessert mash-up ever baked. These Mouthwatering Slutty Brownies are a triple-layered treat stacked with chewy chocolate chip cookie dough, stuffed Oreos, and fudgy brownies baked into one gooey, indulgent bar. They’re messy in the best way—sweet, rich, and so satisfying that just one bite might ruin you for ordinary brownies forever.

Slutty Brownies first went viral thanks to their shamelessly over-the-top nature. This three-in-one dessert wasn’t made to be delicate or dainty—it was made to impress and indulge. The name? Well, it reflects the dessert’s “no shame, all pleasure” attitude.

Each bite delivers:

Buttery cookie dough as the base layer
Crunchy Oreo cookies for a surprise middle
Rich fudge brownie to finish it off

What you get is a bar cookie that’s gooey, chewy, slightly crisp around the edges, and completely irresistible. Whether you’re baking for a party, birthday, or a midnight craving, this is your ultimate dessert flex.

Ingredients Overview

This recipe has three layers. You can use store-bought mixes, but we’ll be using homemade components for maximum flavor.

Cookie Dough Layer

Unsalted Butter: Softened for creaming, adds moisture and buttery flavor.
Brown Sugar + White Sugar: A combo gives chewiness and depth.
Egg: Binds the dough and helps create structure.
Vanilla Extract: Adds warmth and balances the sweetness.
All-Purpose Flour: The base of the dough.
Baking Soda: A touch of lift and spread.
Salt: Balances all the sweetness.
Chocolate Chips: Semi-sweet chips give gooey pockets in the cookie base.

Oreo Layer

Whole Oreo Cookies: Regular or Double Stuf both work. You’ll need about 16 cookies to fully cover the base.

Brownie Layer

Butter: Melted for richness and fudginess.
Granulated Sugar: Sweetens and helps get that shiny crackly top.
Eggs: Provides structure and richness.
Vanilla Extract: Rounds out the chocolate flavor.
Cocoa Powder: Use unsweetened for deep chocolate flavor.
All-Purpose Flour: Minimal flour keeps brownies fudgy.
Salt: Balances the chocolate.
Chocolate Chips or Chunks: For extra gooeyness.

Step-by-Step Instructions

Let’s build this dessert in layers—from the bottom up.

1. Preheat & Prepare Pan

Preheat oven to 350°F (175°C). Line a 9×9-inch square baking pan with parchment paper, leaving overhang on the sides for easy removal.

2. Make the Cookie Dough

In a bowl, cream together:

½ cup (113g) unsalted butter, softened
¼ cup granulated sugar
½ cup brown sugar

Beat until light and fluffy. Add:

1 egg
1 tsp vanilla extract

Mix well. Stir in:

1¼ cups all-purpose flour
½ tsp baking soda
¼ tsp salt

Fold in:

¾ cup chocolate chips

Press the cookie dough evenly into the bottom of the prepared pan.

3. Add the Oreo Layer

Place Oreo cookies in a single layer on top of the cookie dough. Don’t press them in—just gently lay them out. You’ll need about 16 cookies.

4. Make the Brownie Batter

In a separate bowl, whisk:

½ cup (113g) melted butter
1 cup granulated sugar
2 large eggs
1 tsp vanilla extract

Mix until smooth. Sift in:

⅓ cup cocoa powder
½ cup all-purpose flour
¼ tsp salt

Stir until just combined. Fold in:

½ cup chocolate chunks or chips

Pour the brownie batter over the Oreo layer and smooth the top.

5. Bake

Bake for 35–40 minutes, or until the top is set and a toothpick inserted in the center comes out with fudgy crumbs (not raw batter). The center may jiggle slightly—it will set as it cools.

6. Cool and Slice

Let cool completely in the pan, then lift out using the parchment overhang. Slice into bars using a sharp knife. For clean cuts, wipe the knife between slices.

Tips, Variations, and Substitutions

Tips for Perfect Slutty Brownies

Don’t overbake: Pull them when the top is set but the center still looks soft.
Cool completely before slicing—this allows the layers to firm up.
Line your pan: Parchment makes removal and cleanup easier.

Flavor Variations

Peanut Butter Slutty Brownies: Use peanut butter Oreos and add peanut butter chips to the brownie layer.
Mint Chocolate: Use mint Oreos and add a drop of peppermint extract to the brownie batter.
Birthday Cake: Use golden Oreos and add rainbow sprinkles to the cookie dough.

Substitutions

Boxed Mixes: You can use boxed cookie dough or brownie mix to save time—just layer the same way.
Gluten-Free: Use gluten-free flour blends and GF-friendly sandwich cookies.
Vegan: Use vegan butter, plant-based egg substitutes, and dairy-free chocolate chips.

Serving Ideas & Occasions

Slutty brownies are bold and decadent—perfect for:

Bake Sales: They draw a crowd with their triple layers.
Game Day: A dessert MVP.
Girls’ Night In: Serve warm with a scoop of ice cream.
Movie Marathons: Cut into bite-size pieces for snack trays.
Birthdays: Stack into a brownie “cake” with frosting.

You can also refrigerate them for a firmer bite or microwave a square for 15 seconds for gooey perfection.

Nutritional & Health Notes

These aren’t health food—but they’re meant to be indulgent. A little goes a long way, and each bar is rich and satisfying.

Portion-friendly: Cut into small squares for controlled servings.
Make-ahead friendly: They keep well in the fridge or freezer.
Allergen Adaptable: With swaps, they can fit gluten-free or dairy-free diets.

Store in an airtight container at room temperature for 3–4 days, or refrigerate up to a week. They also freeze beautifully.

Frequently Asked Questions

1. Can I use boxed mixes?

Yes! You can use boxed cookie dough or brownie mix for shortcuts. Just prepare as directed and layer them the same way.

2. How do I know when they’re done?

The top should be set and shiny, with a few moist crumbs on a toothpick inserted in the center. The edges will pull slightly away from the pan.

3. Can I make these in a 9×13 pan?

Yes. Double all the layers and bake for 40–45 minutes. Keep an eye on the center—it may need a bit more time.

4. What’s the best way to cut them?

Cool them completely (or chill in the fridge), then use a sharp serrated knife. Clean the blade between cuts for neat slices.

5. Do I have to use Oreos?

Nope! You can use any sandwich cookie—peanut butter, golden, mint, or even stuffed cookies.

6. Can I make them ahead?

Yes. They’re perfect for making 1–2 days in advance. Store at room temp or chilled for longer shelf life.

7. How do I reheat them?

Microwave individual bars for 10–15 seconds for that fresh-from-the-oven gooeyness.

Tasty Recipes Card

Description:
Slutty Brownies are an epic triple-layer dessert made with chocolate chip cookie dough, stuffed Oreos, and fudgy brownies. Gooey, chewy, and totally indulgent—perfect for parties, gifting, or late-night cravings.

Ingredients:
Cookie Dough:

½ cup unsalted butter, softened
½ cup brown sugar
¼ cup granulated sugar
1 egg
1 tsp vanilla extract
1¼ cups all-purpose flour
½ tsp baking soda
¼ tsp salt
¾ cup chocolate chips

Oreo Layer:

16 Oreo cookies (regular or double-stuffed)

Brownie Layer:

½ cup unsalted butter, melted
1 cup granulated sugar
2 eggs
1 tsp vanilla extract
⅓ cup cocoa powder
½ cup all-purpose flour
¼ tsp salt
½ cup chocolate chunks or chips

Instructions:

Preheat oven to 350°F. Line a 9×9-inch pan with parchment paper.
Make cookie dough: Cream butter and sugars. Mix in egg and vanilla. Stir in dry ingredients and fold in chocolate chips.
Press cookie dough into the bottom of the pan.
Layer Oreos evenly over the cookie dough.
Make brownie batter: Mix butter, sugar, eggs, and vanilla. Stir in cocoa, flour, salt, and chocolate chips.
Pour brownie batter over Oreos and smooth the top.
Bake 35–40 minutes. Cool completely before slicing.

Notes:

Chill for cleaner slices.
Use any sandwich cookie for the middle layer.
Microwave for gooey reheat.

Details:
Prep Time: 20 minutes
Cook Time: 40 minutes
Total Time: 1 hour
Yield: 16 bars