M&M Oreo Slutty Brownies
If you love over-the-top dessert bars packed with layers of chocolate goodness, these M&M Oreo Slutty Brownies are going to be your new favorite treat. This delicious brownie recipe combines a chewy chocolate chip cookie base, a layer of Oreo cookies, rich brownie batter, and colorful M&Ms all baked together into one decadent dessert recipe. They are perfect for birthday parties, bake sales, special occasions, or anytime you want a fun dessert that everyone will talk about. Using boxed brownie mix and pre-made cookie dough keeps this recipe quick and simple while still tasting homemade.

Yes! Homemade cookie dough works great if you prefer making everything from scratch.
Absolutely. Peanut butter candies, mini chocolate chips, or chopped candy bars are all delicious options.
The edges should be set while the center may still look slightly soft. The brownies will continue to firm up as they cool.
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Ingredient Notes
- Chocolate chip cookie dough: Creates the chewy chocolate chip cookie base.
- Oreo cookies: Adds the classic Oreo layer in the middle.
- Fudge brownie mix: Makes the rich brownie batter layer.
- Egg: Helps bind the brownie mix together.
- Vegetable oil: Keeps the brownies soft and moist.
- Water: Combines with the brownie mix for the right texture.
- M&M milk chocolate candies: Adds extra chocolate flavor and a colorful topping.
How to Make M&M Oreo Slutty Brownies
- Preheat the oven to 350 degrees F. Line your baking pan with parchment paper and lightly coat with nonstick cooking spray. Press the chocolate chip cookie dough into the bottom of the prepared baking dish in an even layer.
- Place the layer of Oreo cookies over the top of the cookie dough. Arrange the cookies in flat rows to cover as much of the surface as possible.
- In a large bowl, mix together the boxed brownie mix, egg, vegetable oil, and water until fully combined.
- Spread the brownie batter evenly over the Oreo layer. Sprinkle the M&Ms over the top.
- Bake for about 45 minutes or longer depending on the size of your baking pan. The center may still be slightly soft depending on the boxed mix used.
- Remove from the oven and place the pan on a wire rack. Allow the brownies to cool completely before slicing into bars.

M&M Oreo Slutty Brownies
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Ingredients
- 16 ounce package chocolate chip cookie dough
- 16 Oreo cookies
- 18.3 ounce package fudge brownie mix
- 1 egg
- ⅓ cup vegetable oil
- ¼ cup water
- ½ cup M&M milk chocolate candies
Instructions
- Preheat the oven to 350 degrees F. Line your baking pan with parchment paper and lightly coat with nonstick cooking spray. Press the chocolate chip cookie dough into the bottom of the prepared baking dish in an even layer.
- Place the layer of Oreo cookies over the top of the cookie dough. Arrange the cookies in flat rows to cover as much of the surface as possible.
- In a large bowl, mix together the boxed brownie mix, egg, vegetable oil, and water until fully combined.
- Spread the brownie batter evenly over the Oreo layer. Sprinkle the M&Ms over the top.
- Bake for about 45 minutes or longer depending on the size of your baking pan. The center may still be slightly soft depending on the boxed mix used.
- Remove from the oven and place the pan on a wire rack. Allow the brownies to cool completely before slicing into bars.
Nutrition
Nutritional Disclaimer: Family Fresh Meals is not a dietician or nutritionist, and any nutritional information shared is only an estimate. We recommend running the ingredients through an online nutritional calculator if you need to verify any information.
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