Description

These Monster Cookie Dough Brownies are a rich, indulgent dessert featuring a fudgy boxed brownie base, a no-bake monster cookie dough layer with peanut butter, oats, M&M's, and chocolate chips, and a silky chocolate ganache topping. Perfect for parties or a sweet treat, they're easy to make and totally irresistible.

Ingredients

1 box brownie mix

Ingredients listed on the brownie box (typically oil, eggs, and water)

1 cup rolled oats

1/2 cup creamy peanut butter

1/4 cup coconut oil or butter, melted

1/2 cup brown sugar

2 tablespoons milk of choice

1 teaspoon pure vanilla extract

1/2 teaspoon salt

1/2 cup mini M&M’s

1/3 cup chocolate chips

1/2 cup oat flour (or all-purpose flour)

3/4 cup chocolate chips (for ganache)

1/4 cup milk of choice (for ganache)

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Instructions

Preheat oven to 350°F (175°C) and prepare brownie batter as directed on the box.
Spread brownie batter in a greased 9x9-inch baking pan and bake according to package instructions. Let cool completely.
In a large bowl, mix melted coconut oil (or butter), peanut butter, brown sugar, milk, vanilla, and salt until smooth.
Stir in rolled oats, oat flour, mini M&M’s, and chocolate chips until well combined.
Gently press the monster cookie dough evenly over the cooled brownie base.
In a microwave-safe bowl, melt 3/4 cup chocolate chips with 1/4 cup milk in 30-second intervals, stirring between each, until smooth.
Pour ganache over the cookie dough layer and spread evenly.
Refrigerate the pan for at least 1–2 hours until fully set.
Once firm, slice into squares and serve.

Notes

Use certified gluten-free oats and oat flour for a gluten-free version.

Substitute sunflower seed butter for a nut-free option.

Store in the fridge for up to 5 days or freeze for up to 2 months.

Brownies taste even better the next day after chilling.

Double the recipe for a 9x13-inch pan; adjust baking and chilling time accordingly.

Prep Time: 20 minutes
Cook Time: 30 minutes
Category: Dessert
Method: No Bake + Baked
Cuisine: American

Nutrition

Serving Size: 1 square
Calories: 320
Sugar: 24g
Sodium: 150mg
Fat: 18g
Saturated Fat: 8g
Unsaturated Fat: 9g
Trans Fat: 0g
Carbohydrates: 36g
Fiber: 2g
Protein: 4g
Cholesterol: 15mg