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This Easy Oreo Brookies Recipe Is a Decadent Dessert You’ll Want Again and Again!

Decedent layered brownies that contain a chocolate chip cookie layer, a layer of Oreos and a brownie layer as well. The text overlay says, "The Best Oreo Broke Recipe."

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If you’ve never tried Oreo Brookies before, get ready for your new favorite treat. This easy Oreo Brookies recipe combines layers of chewy chocolate chip cookie dough, a full Oreo layer, and rich, gooey brownies on top—baked into one outrageous bar that’s as fun to eat as it is to make!

Whether you go for the homemade version or use shortcuts like refrigerated cookie dough and a fudge brownie mix, you’ll still end up with one of the best dessert bars you’ve ever tasted. Let’s get into the layers of chocolate-y goodness and discuss their other name: Slutty Brownies. Full disclosure: I’m not a big fan of the name “Slutty Brownies” so I’m using the family-friendly name: Oreo Brookies!

Where Did the More Questionable Name Come From?

The name Slutty Brownies might raise an eyebrow or two, but I encourage you to hang in there and get to the bottom of things….sort of. I had so many questions the first time I heard it! But here’s the scoop: the original recipe for this mashup dessert was first posted by Kevin and Amanda in 2011. Later, a blogger at The Londoner gave it the provocative name in hopes of going viral—and it worked.

Some say the name comes from the fact that these indulgent brownies are “easy,” “messy,” or “a little bit extra.” Whatever the reason, the name stuck, and the delicious slutty brownies became internet famous.

Call them what you want—Oreo Brookies, Slutty Brownies, Layered Cookie Bars, or just “The Best Brownies Ever”—this is an over the top treat that you’re gonna love!

Why You’ll Love This Recipe

It’s an easy dessert recipe with flexible options (gluten-free, egg free, dairy free)
It has a chewy chocolate chip cookie base, creamy Oreos, and a fudgy brownie layer, what’s not to love?!
Works with store-bought shortcuts or your own homemade brownie batter and chocolate chip cookie recipe
Can be prepped ahead and stored covered with plastic wrap or in an airtight container
Perfect for parties, bake sales, or just satisfying a serious sweet tooth

What’s fun about this Oreo Brookies recipe is that they really are as easy or complicated as you make them. Have a favorite brownie/cookie recipe? Use those recipes! Don’t have much time? Use store-bought cookie dough and a brownie mix!

Ingredients for Oreo Brookies

To create these decadent Oreo Brookies, you’ll need three simple layers:

Chocolate chip cookie dough base – Use refrigerated cookie dough, or your favorite chocolate chip cookie recipe
Layer of Oreo cookies – A full package of regular Oreos works perfectly
Brownie layer – Either a fudge brownie mix or homemade brownies (make a half-batch that fits in an 8″ x 8″ baking dish)

If using boxed mixes, don’t forget:

Large eggs
Vegetable oil
Water (as directed on the box)

Tools You’ll Need

9×13” baking pan or baking dish
Non-stick spray or tin foil and cooking spray
Large bowl for mixing
Wire rack for cooling

Tips for Best Results

Use room temperature cookie dough for easier spreading
Line your baking pan with tin foil or parchment for easy lifting and clean-up
Don’t overbake – a perfectly done fudgy brownie texture is part of the magic!
Cool completely on a wire rack before slicing for clean edges
For an extra treat, serve warm with a scoop of vanilla ice cream

Optional: Homemade Brownie Batter (8×8 pan – Half Batch)

If you’d like to skip the box and go homemade, this is my go-to easy brownie recipe adapted from an old blog (that’s no longer in existence) that I loved.

Ingredients:

½ cup melted butter
1 cup + 2 tbsp granulated sugar
1 large egg
½ tbsp vanilla extract
¾ cup all-purpose flour
½ cup + 2 tbsp dark cocoa powder
½ tsp baking powder
½ tsp salt
1 cup dark chocolate chips

Steps:

Preheat oven to 350°F.
In a small saucepan, melt the butter and mix in sugar over low heat for 2 minutes.
Cool for several minutes, then add egg and vanilla.
Mix dry ingredients in a separate bowl (flour, cocoa, salt, baking powder).
Combine wet and dry ingredients and mix until just combined. Stir in chocolate chips.
Pour into greased 8×8 pan and bake 25–30 minutes.
Cool before cutting. These fudgy brownies are rich and moist!

Oreo Brookies Assembly Instructions

Whether you use boxed mixes or go homemade, the steps stay the same.

Preheat oven to 350°F.
Spray a 9×13” baking dish with non-stick spray or line with tin foil or parchment paper.
Press your cookie dough base evenly into the bottom.
Add a full layer of Oreo cookies on top of the dough.
Pour the brownie layer over the top of the Oreos. Spread gently.
Bake for 35–45 minutes. Check doneness with a toothpick—there should be moist crumbs, not raw batter.
Cool completely on a wire rack before slicing.
Cut into small squares—these are rich, so a little goes a long way!
Store leftovers in an air tight container for up to a week.

Making Them Allergy Friendly

Creating a version of this decadent Oreo Brookies recipe that works for different dietary needs can be a little tricky, but not impossible!

Cookie Dough Base – If you need a gluten-free option, I recommend starting with a chewy chocolate chip cookie base made from a trusted gluten-free chocolate chip cookie recipe or refrigerated dough labeled GF. Vegan variations are a little harder to get right, especially if you’re looking for that chewy, rich texture. If you want to make the components from scratch you can swapping in your favorite plant-based butter and a flax egg, just be aware that it might lack that ultra chewy texture.

Oreo Layer – The layer of Oreo cookies is a must, and thankfully, Oreo now offers a gluten-free version that tastes almost identical to the original!

Brownie Layer – Use gluten-free flour like Bob’s Red Mill 1-to-1 for best results. You can also substitute with a fudge brownie mix that fits your dietary needs—just double-check the label. If you’re making a homemade version, use olive oil-based butter or any plant-based butter.

Pro Tips for Best Results

Here are a few final tips to get that perfect texture and flavor every time:

Let all your ingredients come to room temperature before baking—this makes a big difference in the final texture.
Use non-stick spray or line your baking dish with tin foil for easier removal and cleanup.
Always place the brownies on a wire rack to cool. This helps preserve that soft, gooey brownie center without overcooking the bottom cookie layer.
For the top layer, spread your brownie batter gently over the Oreo layer to avoid shifting your layers.
The hardest part? Letting them cool before cutting! But trust me, it’s worth it for that perfect layered slice.

Serving Suggestions

Want to really wow your crowd? Serve your Oreo Brookies with a scoop of vanilla ice cream or a drizzle of hot fudge. These indulgent brownies are rich, gooey, and an absolute dream for anyone with a sweet tooth.

They’re also perfect for:

Bake sales
Potlucks
Casual parties
“Just because” nights when you need a pick-me-up

Wrap individual squares in plastic wrap for easy gifting or freezing (yes—they freeze well for up to two months!).

Final Thoughts

Whether you try the recipe with store bought dough and mixes or make your own homemade version, this easy Oreo Brookies recipe is sure to become one of your favorite desserts yet!

It’s such a great recipe for beginners and experienced bakers alike, with plenty of flexibility to make it your own. From the chewy chocolate chip cookies on the bottom to the fudgy brownie layer on top, it’s a delicious dessert you’ll want to make again and again.

And if this is your first time making them? Welcome. You’re about to discover one of the best things you’ve ever baked.

Print Recipe

5 from 1 vote

Homemade Oreo Brookies

A delicious, decadent mix of smooth chocolate chip cookie dough, satisfying Oreo cookies, and rich brownie mix. All combined to make the most amazing treat you've ever had!

Equipment

1 set measuring spoons
1 Large Bowl
1 9×13 pan
1 bowl scraper
1 hand mixer
1 can of cooking spray

Ingredients

Homemade Brownie Layer

½ cup butter optional use of box mix
1 cup + 2 tbsp granulated sugar
1 egg
½ tbsp vanilla extract
¾ cup flour
½ cup + 2 tbsp dark cocoa powder
½ tsp baking powder
½ tsp salt
1 cup dark chocolate chips

Oreo Layer

1 pack original Oreos

Cookie Dough Layer

2 16oz packages pre-made cookie dough optional use of homemade cookie dough

Instructions

Preheat the oven to 350 degrees.
Grease a 9×13 pan or line it with parchment paper. (Tip: I prefer glass and greasing the pan for these so I can see the base better.)
Prepare/open your cookie dough and spread evenly into the bottom of your pan.
Place a single layer of Oreos overtop your cookie dough.
Prepare your brownie mix (homemade or as directed) and spread evenly over top your Oreos. It may be helpful to spoon dollops of mix all over and then use a rubber spatula (or your hands if it’s really thick) to spread into an even layer.
Bake at 350 for about 40 minutes. A toothpick should come out mostly clean with a few moist crumbs on it. Poke another spot to check if your first poke only brought up chocolate chip! If you can see the base, it’s helpful to see the cookies turning golden.
Cool completely and remove. Either flip out (quickly!) onto a cutting board or use the edges of the parchment to pull up gently.
Once cooled (don’t skip this!!), cut brownies to desired size. I tend to cut mine a little smaller than I normally would simply because they are so thick and rich.
Store in an airtight container up to a week, assuming they last that long!

Notes

Homemade Brownie Mix Recipe

Preheat oven to 350 degrees.

Grease an 8×8 pan and set aside.

In a medium saucepan, melt the butter over medium heat.

Add the sugar to the saucepan and cook for two minutes, stirring so it doesn’t burn.

Remove from heat and let cool several minutes.

Add your egg and vanilla. Stir until combined.

In a separate bowl, mix together your dry ingredients – flour, dark cocoa powder, baking
powder, salt.

Combine your wet ingredients with your dry, mixing until just combined.

Add chocolate chips, mixing again until just combined.

Spread into your pan and bake for 25-30 minutes. A toothpick should come out with damp crumbs. You may need to test a couple areas due to the chocolate chips. You don’t want to overcook these! Another check is the edge – it should be firm and just starting to pull away from the edge of the pan.

Let cool for an hour or so before cutting.