Decadent Fudgy Slutty Brownies Recipe

These Slutty Brownies are the ultimate mashup of your favorite desserts—soft, chewy chocolate chip cookies, crunchy Oreos, and rich, fudgy brownies all in one bite. They’re the kind of treat that makes you want to grab another piece before you’ve even finished the first. Whether you’re baking for a casual hangout or a special occasion, this dessert hits the spot every time.

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I dream about these brownies. They’re like three desserts in one: cookie dough, Oreo cookies, and brownies for triple the indulgence. Needless to say, they are the ultimate crowd-pleaser! You can have them on your table in just 40 minutes, and you can make them ahead. They are perfect for all the holidays, potlucks, game days, and any gathering you can think of. Try them; you won’t regret it.

Ingredients You’ll Need

You’ll need all the ingredients shown in the photograph below.

How to Make Slutty Brownies with Step-By-Step Instructions

Scroll down for the full recipe card containing a full printable recipe and measurements in both US customary and metric units.

You’re going to love how easy these brownies are to make; just follow my straightforward instructions.

Prep Your Baking Dish and Oven

Start by lining a 9×9 inch baking dish with parchment paper, leaving a little overhang to make it easier to lift the brownies out later. Preheat your oven to 350°F (180ºC), so it’s ready to go once you’ve prepped the layers.

Mix the Cookie Dough Layer

Let’s start with the cookie layer. In a small bowl, sift together the flour, baking soda, baking powder, and salt—this will ensure that everything mixes evenly later on.

In a larger bowl, cream together the softened butter, granulated sugar, and brown sugar. Beat it for about 5 minutes until it’s light and fluffy. Once it’s creamy, mix in the vanilla extract and the egg, just until combined.

Now, grab your sifted dry ingredients and gently fold them into the butter mixture. Use a spatula, and be careful not to overmix—it should come together with a slightly soft, sticky texture. Finally, fold in your chocolate chips to bring everything together.

Layer with Oreos

Spread the cookie dough evenly into your prepared baking dish, pressing it down gently so it covers the bottom.

Then, top the cookie dough with a layer of Oreo cookies, covering as much surface as possible. No need to press them in too hard—the brownie layer will take care of that!

Make the Brownie Batter

Now, let’s move on to the brownie layer. In a large bowl, melt the butter and dark chocolate.

You can do this in the microwave in 1-minute intervals, stirring between each, or use a double boiler on the stove. Once the butter and chocolate are melted and smooth, let it cool slightly.

Next, whisk in the sugar and eggs until the mixture looks smooth and shiny. Add the flour, cocoa powder, and salt. Gently stir until just combined—there is no need to overdo it, or your brownies might come out dense.

Assemble and Bake

Pour the brownie batter over the Oreos, spreading it evenly to cover the cookie layer completely. Smooth out the top so the brownies bake evenly.

Place the dish in your preheated oven and bake for around 25 minutes. To check if they’re done, poke a toothpick into the center. If it comes out mostly clean (a few moist crumbs are fine), your brownies are ready to come out!

Let them cool completely before cutting into squares—trust me, this makes them way easier to slice!

Recipe Notes and Expert Tips

Mistakes happen; I appreciate that, but if you take a look at my notes and tips, you should be on the road to brownie success!

• Soft Butter for Success: For the cookie dough, make sure your butter is softened to room temperature. This will give you that perfect creamy texture.
• Go Easy on the Mixing: Overmixing the batter can make your brownies and cookie layer tough. Mix just until everything is combined, and you’ll be golden.
• Oreo Variations: Want to mix things up? Try using flavored Oreos like mint or peanut butter for a fun twist.
• Chocolate Melting Tip: If you’re melting the butter and chocolate on the stove, make sure the bowl doesn’t touch the water in your double boiler to avoid burning.
• Testing for Doneness: Don’t stick your toothpick into a chocolate chip or an Oreo when checking for doneness, as this can give you a false result.
• For Clean Slices: Wait until the brownies are completely cool before cutting them. Use a sharp knife, and wipe it clean between cuts for those picture-perfect squares.
• Warm Serving Hack: If you prefer your brownies warm, heat individual slices in the microwave for 10–15 seconds. The chocolate gets all melty again, making them even more indulgent.

How to Store Leftover Slutty Brownies

To keep your slutty brownies fresh, store them in an airtight container at room temperature for up to 3 days. If you want to stretch them out a bit longer, you can pop them in the fridge, where they’ll stay good for up to a week.

Freezing isn’t the best option for these, as the cookie layer can lose its crunch, and the brownie layer might get too dense. They’re best enjoyed fresh (and who can resist, really?).

More Easy Dessert Recipes for You to Try at Home

Got a sweet tooth and want more dessert recipes? Try these drool worthy recipes!

• Biscoff Brownies
• Cinnamon Sugar Blondies
• Cake Mix Chocolate Chip Cookie Bars
• Chocolate Pumpkin Bars
• Chocolate Cake