Monster Cookie Dough Brownies
Monster Cookie Dough Brownies are a deliciously sweet, layered dessert that’s made with a boxed brownie mix, edible cookie dough, and ganache! Takes only 15 minutes to prep!
Whip up another monster-style treat by trying a no-bake recipe such as these Monster Cookie Energy Balls or Easy Edible Monster Cookie Dough!

All About These Monster Cookie Dough Brownies
Why choose between a cookie or a brownie when you can have both in these Monster Cookie Dough Brownies? They’re perfectly rich and satisfying, making it a dessert that’s sure to please!
This Monster Cookie Dough Brownie Recipe pairs your favorite boxed brownie mix with Easy Edible Monster Cookie Dough and then smothers it in a thick Chocolate Ganache topping!
Rebecca’s Recipe Review
Taste: Chocolaty, fudgy with sweet peanut buttery cookie dough and a rich chocolate topping.
Texture: The smooth ganache instantly gives way to the tender cookie dough that’s studded with crunchy M&Ms that then leads you right to the fudgy brownie!
Ease: 5/10
Pros: A decadent brownie that’s easy to make.
Cons:
Would I Make This Again? Yes!

Ingredients For Monster Cookie Dough Brownies
- Brownie Layer:
- A Box Brownie Mix + The ingredients called for on the back of the box.
- Cookie Dough Layer:
- All Purpose Flour
- 1-Minute Oats
- Creamy Peanut Butter
- Unsalted Butter
- Light Brown Sugar
- Granulated Sugar
- Heavy Cream
- Vanilla Extract
- Salt
- Mini Chocolate Chips
- Mini M&Ms
- Ganache Layer:
- Heavy Cream
- Semi-Sweet Chocolate
- Powdered Sugar
- Vanilla Extract
Ingredient Notes
Heavy Cream – For best results, I’d really recommend sticking with full-fat heavy cream. However, if you’re in a pinch, you could use heavy whipping cream instead. I just don’t suggest using half & half or light cream to make the ganache.
Peanut Butter – I don’t suggest using all-natural peanut butter in the cookie dough layer recipe. This is because all-natural peanut butter has a runnier consistency which will cause the texture of the cookie dough layer to be significantly different.
Edible Cookie Dough – Feel free to use whatever mix-ins you prefer when making the edible cookie dough layer! Try making it with Reese’s pieces, shredded coconut, chopped-up candies, or even heath toffee bits.

How To Make Monster Cookie Dough Brownies
- Prepare and bake the brownies according to the directions on the back of the box for fudgy texture.
- Add flour and oatmeal to a small bowl and microwave it at intervals, stirring between intervals to heat treat the flour.
- Cream the peanut butter, butter, light brown sugar, and granulated sugar together until it becomes light and fluffy.
- Beat in the heavy cream, vanilla, and salt until smooth. Then mix in the cooled heat treated flour until fully combined.
- Fold in the mini chocolate chips and mini M&Ms.
- Spread the monster cookie dough over the top of the completely cooled brownies.
- Prepare the ganache by simmering the heavy cream in a small saucepan and then pouring it over chopped chocolate in a heat safe bowl. Allow this to set.
- Whisk the chocolate and heavy cream together until smooth and then whisk in the powdered sugar and vanilla extract.
- Pour and spread the ganache topping over the top of the cookie dough layer. Sprinkle additional mini M&Ms and mini chocolate chips over the top.
Rebecca’s Tips
- Brownie Mix – This recipe gives you the freedom to use your favorite box of brownie mix! Just be sure to bake it in an 8X8-inch pan, as that’s the size dish this brownie recipe is tailored to!
- Flour – When measuring the flour for the cookie dough layer, fluff it in its container. Then scoop the flour out and into your measuring cup, leveling it off with the back of a butter knife. This method prevents the flour from being packed into the measuring cup, which results in too much flour, ultimately leading to dry, crumbly cookie dough!
- Heat Treating – To make the edible cookie dough safe for consumption, you must heat treat the flour and oatmeal. The mixture needs to reach a temperature of 160 degrees F and can be checked using a kitchen thermometer. Once it’s up to temperature, allow it to cool before adding it to the recipe, or it will change the structure of the cookie dough layer.
- Ganache – This is made by heating only the heavy cream at a low simmer. It’s then poured over the finely chopped chocolate in a heat-safe bowl. After about 5 minutes, the two are stirred together before whisking in the powdered sugar and vanilla extract.
- Serving – Once all the layers are assembled, the brownies need time to set before serving. This gives the ganache time to cool down and firm up, making for easier slicing and serving!

Why Are They Called Monster Brownies?
These brownies get their name from their monster cookie layer that’s hidden underneath the ganache topping! Monster cookies are homemade cookies that are loaded with add-ins while also being flexible with what you add to them.
They’re known for having a little of everything in them – basically, if it’s in your pantry, throw it in! The monster layer in these brownies is actually made with edible cookie dough that isn’t baked.
However, the same rules still follow, if you have a certain add-in that you want to be mixed in then just toss it in! The cookie dough layer in this recipe is made with mini chocolate chips and M&Ms, but feel free to mix it up!
Storage Instructions For Monster Cookie Dough Brownies
Tightly wrap the baking dish with plastic wrap or tin foil or transfer brownie slices into an airtight container. Afterward, store the brownies in the refrigerator and enjoy them within 3 days.

More Sweet Brownie Recipes:
- Mississippi Mud Pie Brownies – Topped with marshmallows and a drizzle of chocolate!
- Chocolate Chunk Brownies – Studded with thick chunks of bittersweet chocolate!
- S’mores Brownies – Covered with a perfectly toasted marshmallow top!
- Gourmet Pecan Pie Brownies – Made with a layer of yummy pecan pie filling!
- Lactation Brownies – A sweet way to boost your breast milk production fast!
Did You Make This Recipe?
If you’ve tried this recipe, please let leave a review in the comments below. I love hearing from you! Don’t forget to tag me – @sugarandsoulco – on Instagram and Pinterest with your photos, or join our Sugar & Soul Show-offs Community and share them there.

Monster Cookie Dough Brownies
Ingredients
Brownie Layer
- 1 (18oz.) box brownie mix + ingredients called for on back of box
Cookie Dough Layer
- 1 cup all-purpose flour spooned and leveled
- ½ cup 1-Minute Oats
- ⅓ cup creamy peanut butter
- ¼ cup unsalted butter softened
- ¼ cup light brown sugar packed
- ¼ cup granulated sugar
- ¾ cup heavy cream
- 1 teaspoon vanilla extract
- ¼ teaspoon salt
- ½ cup mini chocolate chips
- ½ cup mini M&M's plus more for topping
Ganache Layer
- 4 ounces heavy cream
- 4 ounces semi-sweet chocolate finely chopped
- ¼ cup powdered sugar
- 1 teaspoon vanilla extract
Instructions
- Prepare and bake the brownies according to the box directions for fudge texture in an 8×8-inch baking pan.1 (18oz.) box brownie mix
- While brownies are baking, add the flour and oatmeal to a small bowl and microwave for FIVE 15-second intervals, stirring between each one to heat treat the flour. The flour should reach a temperature of at least 160°F. Allow the flour to cool for 5 minutes after the last round.1 cup all-purpose flour, ½ cup 1-Minute Oats
- In a medium bowl, cream together the peanut butter, butter, light brown sugar, and granulated sugar until light and fluffy.⅓ cup creamy peanut butter, ¼ cup unsalted butter, ¼ cup light brown sugar, ¼ cup granulated sugar
- Beat in the heavy cream, vanilla, and salt until smooth. Then beat in the cooled flour until fully combined.¾ cup heavy cream, 1 teaspoon vanilla extract, ¼ teaspoon salt
- Use a rubber spatula to fold in the chocolate chips and M&Ms.½ cup mini chocolate chips, ½ cup mini M&M's
- Once the brownies have cooled, spread the cookie dough out on top of the brownies.
- Then prepare the ganache by bringing the heavy cream to a low simmer in a small pot and pouring over the chopped chocolate in a heat-safe bowl. Let sit for 5 minutes.4 ounces heavy cream, 4 ounces semi-sweet chocolate
- Whisk the chocolate and heavy cream together until smooth, then whisk in the powdered sugar and vanilla extract.¼ cup powdered sugar, 1 teaspoon vanilla extract
- Pour and spread the ganache over the top of the cookie dough layer. Top with additional mini m&m's and sprinkles if desired and allow to set until cool before slicing.
Notes
- Store in an airtight container in the refrigerator and enjoy within 3 days.
- Another easy method for heat-treating the flour is spreading the flour out on a rimmed baking sheet and baking at 350 degrees F for 5 to 6 minutes.
Nutrition
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Tasted good terrible consistency