Monster Cookie Fudgy Brownies combine the best of both worlds: rich, fudgy brownies topped with a delicious monster cookie layer filled with oats, chocolate chips, and peanut butter. These decadent treats are perfect for parties, special occasions, or whenever you’re craving something sweet!
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Ingredients
For the Fudgy Brownies:
- 1/2 cup (1 stick) unsalted butter
- 1 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 1/3 cup unsweetened cocoa powder
- 1/2 cup all-purpose flour
- 1/4 teaspoon salt
- 1/4 teaspoon baking powder
- 1/2 cup chocolate chips (optional, for extra fudginess)
For the Monster Cookie Layer:
- 1/2 cup unsalted butter, softened
- 1/2 cup creamy peanut butter
- 1/2 cup brown sugar, packed
- 1/2 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 cup rolled oats
- 1/2 cup all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 cup chocolate chips
- 1/2 cup M&M candies (or other candies of your choice)
Timing
Making Monster Cookie Fudgy Brownies takes about 15 minutes for preparation and 30-35 minutes for baking.
Instructions
Step 1: Prepare the Fudgy Brownies
- Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9×9-inch baking pan or line it with parchment paper for easy removal.
- Melt Butter: In a medium saucepan over low heat, melt the butter. Remove from heat and stir in the granulated sugar, eggs, and vanilla extract until well combined.
- Add Dry Ingredients: Stir in the cocoa powder, flour, salt, and baking powder until just combined. If using, fold in the chocolate chips.
- Spread in Pan: Pour the brownie batter into the prepared baking pan and spread it evenly.
Step 2: Prepare the Monster Cookie Layer
- Mix Wet Ingredients: In a large mixing bowl, beat together the softened butter, peanut butter, brown sugar, and granulated sugar until creamy. Add the egg and vanilla extract, mixing until smooth.
- Add Dry Ingredients: Stir in the rolled oats, flour, baking soda, and salt until just combined. Fold in the chocolate chips and M&M candies.
- Spread on Brownies: Carefully dollop the monster cookie mixture over the brownie layer. Use a spatula to gently spread it out evenly.
Step 3: Bake
- Bake: Bake in the preheated oven for 30-35 minutes, or until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs (it’s okay if it’s slightly underbaked for a fudgy texture).
- Cool: Allow the brownies to cool in the pan for about 15-20 minutes before slicing into squares.
Step 4: Serve
- Enjoy: Serve your Monster Cookie Fudgy Brownies warm or at room temperature. They can be stored in an airtight container for up to a week.

Nutritional Information
Here’s a quick overview of the nutritional content of Monster Cookie Fudgy Brownies (per brownie, based on 16 servings):
| Nutrient | Amount per Serving |
|---|---|
| Calories | 200 |
| Protein | 4g |
| Fat | 10g |
| Carbohydrates | 26g |
| Sugar | 14g |
Tips for Customization
- Nut Variations: Add chopped nuts like walnuts or pecans for added crunch.
- Different Candies: Substitute the M&M candies with your favorite chocolate candies or even dried fruits.
- Gluten-Free Option: Use a gluten-free flour blend in place of all-purpose flour.
Storage Instructions
Store the brownies in an airtight container at room temperature for up to a week. They can also be frozen for up to 3 months; just thaw at room temperature before serving.
Conclusion
Monster Cookie Fudgy Brownies are a delightful combination of rich brownies and chewy monster cookies, making them a perfect treat for any occasion. With their delicious flavors and fun textures, these brownies are sure to be a hit!
FAQs
Can I make these brownies ahead of time?
Yes! You can prepare them a day in advance and store them covered at room temperature.
What can I serve these brownies with?
These brownies pair well with a scoop of ice cream, whipped cream, or a glass of milk.
Monster Cookie Fudgy Brownies Recipe
Ingredients
- For the Fudgy Brownies:
- • 1/2 cup (1 stick) unsalted butter
- • 1 cup granulated sugar
- • 2 large eggs
- • 1 teaspoon vanilla extract
- • 1/3 cup unsweetened cocoa powder
- • 1/2 cup all-purpose flour
- • 1/4 teaspoon salt
- • 1/4 teaspoon baking powder
- • 1/2 cup chocolate chips (optional, for extra fudginess)
- For the Monster Cookie Layer:
- • 1/2 cup unsalted butter, softened
- • 1/2 cup creamy peanut butter
- • 1/2 cup brown sugar, packed
- • 1/2 cup granulated sugar
- • 1 large egg
- • 1 teaspoon vanilla extract
- • 1 cup rolled oats
- • 1/2 cup all-purpose flour
- • 1/2 teaspoon baking soda
- • 1/4 teaspoon salt
- • 1/2 cup chocolate chips
- • 1/2 cup M&M candies (or other candies of your choice)
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9x9-inch baking pan or line it with parchment paper for easy removal.
- Melt Butter: In a medium saucepan over low heat, melt the butter. Remove from heat and stir in the granulated sugar, eggs, and vanilla extract until well combined.
- Add Dry Ingredients: Stir in the cocoa powder, flour, salt, and baking powder until just combined. If using, fold in the chocolate chips.
- Spread in Pan: Pour the brownie batter into the prepared baking pan and spread it evenly.
- Mix Wet Ingredients: In a large mixing bowl, beat together the softened butter, peanut butter, brown sugar, and granulated sugar until creamy. Add the egg and vanilla extract, mixing until smooth.
- Add Dry Ingredients: Stir in the rolled oats, flour, baking soda, and salt until just combined. Fold in the chocolate chips and M&M candies.
- Spread on Brownies: Carefully dollop the monster cookie mixture over the brownie layer. Use a spatula to gently spread it out evenly.
- Bake: Bake in the preheated oven for 30-35 minutes, or until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs (it’s okay if it’s slightly underbaked for a fudgy texture).
- Cool: Allow the brownies to cool in the pan for about 15-20 minutes before slicing into squares.
- Enjoy: Serve your Monster Cookie Fudgy Brownies warm or at room temperature. They can be stored in an airtight container for up to a week.
Step 1: Prepare the Fudgy Brownies
Step 2: Prepare the Monster Cookie Layer
Step 3: Bake
Step 4: Serve
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