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Monster Cookie Brownies
Rich, fudgy chocolate brownies topped with a buttery oatmeal monster cookie crumble loaded with colorful M&M's! Two favorite desserts come together in one delicious homemade treat.
Servings: 16 servings
Calories: 406kcal
Ingredients
Brownie Batter
- ½ cup salted butter
- 1 cup granulated sugar
- 1 large egg
- 2 egg yolks
- ½ cup all-purpose flour
- ½ cup Dutch cocoa powder
- 1 cup semi-sweet chocolate chips
Monster Cookie Dough
- ½ cup salted butter softened
- ¾ cup light brown sugar
- ¼ cup granulated sugar
- 1 large egg
- 1 cup all-purpose flour
- ½ cup old-fashioned oats
- 1 cup regular M&M's
Instructions
- Preheat the oven to 350°F. Grease an 8x8-inch baking pan with butter or nonstick cooking spray.
- Prepare the brownie batter: Melt the butter in the microwave. Once melted, whisk in the granulated sugar, followed by the whole egg and egg yolks.
- Whisk in the flour and Dutch cocoa powder until fully incorporated. Fold in the semi-sweet chocolate chips.
- Spread the brownie batter evenly into the prepared baking pan. Bake for 10 minutes.
- Prepare the monster cookie dough: While the brownies are baking, cream the softened butter, brown sugar, and granulated sugar together using an electric hand mixer.
- Mix in the egg, followed by the flour and old-fashioned oats, until no dry pockets remain.
- Fold in the M&M's until evenly distributed throughout the cookie dough.
- Sprinkle chunks of monster cookie dough evenly over the partially baked brownie batter.
- Return the pan to the oven and bake for another 10 minutes, or until the cookie dough is golden brown.
- Allow the brownies to cool in the pan for about 30 minutes before slicing into 16 squares.
Notes
- Best Tip: Don't skip the first 10 minutes of baking the brownie layer. This helps prevent the monster cookie dough from sinking into the brownie batter.
- Cookie Dough: The cookie dough will look slightly dry and crumbly, almost like a streusel topping. This is normal!
- Clean Slices: Let the brownies cool in the pan for about 30 minutes before cutting into squares.
- Storage: Store completely cooled brownies in an airtight container at room temperature for up to 5 days.
- Reheating: Warm individual brownies in the microwave for about 15 seconds for that fresh-from-the-oven taste.
- Freezing: Wrap cooled brownies individually and store in a freezer-safe container for up to 3 months. Thaw at room temperature before serving.
Nutrition
Serving: 1serving | Calories: 406kcal | Carbohydrates: 53g | Protein: 5g | Fat: 21g | Saturated Fat: 12g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 81mg | Sodium: 115mg | Potassium: 155mg | Fiber: 3g | Sugar: 38g | Vitamin A: 455IU | Vitamin C: 0.1mg | Calcium: 47mg | Iron: 2mg