Monster Cookie Fudgy Brownies Recipe
These Monster Cookie Fudgy Brownies combine rich, fudgy chocolate brownies with a colorful, chewy monster cookie layer on top, loaded with oats, M&M’s, and chocolate chips for a deliciously indulgent treat that’s perfect for sharing or satisfying your sweet tooth.
- Author: Marco
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Total Time: 1 hour
- Yield: 16 brownies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Monster Cookie Dough
- 1/2 cup All-purpose flour
- 1 tsp Cornstarch
- 1/2 tsp Baking soda
- 1/8 tsp Baking powder
- 1/4 tsp Salt
- 1/4 cup Unsalted butter (room temperature)
- 1/3 cup Brown sugar (packed, light or dark)
- 1/8 cup White granulated sugar
- 1/4 cup Peanut butter (creamy)
- 1 tsp Pure vanilla extract
- 1 Large egg (room temperature)
- 1/2 cup Quick oats
- 1/2 cup Mini chocolate chips
- 1/2 cup Mini M&M’s
Brownie Batter
- 1 1/3 cup White granulated sugar
- 2 Large eggs
- 1 Egg yolk
- 5 TBSP Unsalted butter
- 1/3 cup Oil (canola or vegetable)
- 1 tsp Pure vanilla extract
- 1/2 cup All-purpose flour
- 3/4 cup Unsweetened cocoa powder (Dutch process)
- 1 TBSP Cornstarch
- 1/4 tsp Salt
- 1/2 cup Semi-sweet chocolate chips
- 1/2 cup Milk chocolate chips
- Prepare Monster Cookies: In a medium-sized mixing bowl, combine flour, cornstarch, baking soda, baking powder, and salt. In a separate bowl, beat the butter, brown sugar, and white sugar together for 1 minute until light and fluffy. Add peanut butter and mix for another minute. Add vanilla and egg, mixing until combined. Scrape the bowl and mix again for 20 seconds.
- Combine Monster Cookie Ingredients: Slowly add the dry ingredient mixture to the wet ingredients. Once combined, gently fold in the oats, M&M’s, and mini chocolate chips. Cover and chill the dough for 40 minutes.
- Preheat and Prepare Pan: When cookie dough is almost chilled, preheat the oven to 325°F (163°C). Spray a 9×9-inch pan with non-stick baking spray, then line the bottom and two sides with parchment paper for easy removal.
- Mix Brownie Dry Ingredients: In a medium bowl, whisk together flour, cocoa powder, cornstarch, and salt. Set aside.
- Beat Brownie Eggs and Sugar: Using a mixer with a whisk attachment, beat sugar, eggs, and egg yolk for 5 minutes until very light and fluffy. Melt butter while mixing to allow cooling.
- Add Wet Ingredients to Brownie Mixture: Gradually add melted butter, oil, and vanilla extract to the egg mixture on low speed until combined. Remove from mixer.
- Fold in Dry Ingredients and Chips: Using a rubber spatula, gently fold in the dry ingredient mixture, careful not to deflate the egg mixture. Next, fold in the semi-sweet and milk chocolate chips.
- Bake Brownie Base: Pour batter into the prepared pan and smooth evenly. Bake for 15 minutes, allowing the top to set slightly.
- Add Monster Cookie Topping: Remove cookie dough from the fridge. Take small handfuls and flatten into disc shapes. Place them evenly on top of the partially baked brownie base.
- Bake Combined Brownies and Cookies: Bake for an additional 20 minutes. Loosely cover with foil to prevent over-browning and bake another 5-10 minutes until both cookie and brownie layers are fully set with no jiggle.
- Cool Completely: Remove from oven and place brownies on a cooling rack. Allow them to cool completely to room temperature before cutting to ensure clean slices.
- Store: Store at room temperature in an airtight container for up to 3 days.
Notes
- Use room temperature eggs and butter for best texture in cookie dough.
- Chilling the cookie dough helps prevent spreading when baked on top of the brownies.
- Line the pan with parchment paper for easy removal and clean edges.
- Be gentle when folding dry ingredients into the brownie batter to keep it light and fudgy.
- Ensure brownies are fully cooled before cutting to avoid crumbs and breaking.
- Store brownies in an airtight container to maintain freshness.
- Can substitute mini M&M’s with other colorful candy or nuts if desired.
Nutrition
- Serving Size: 1 brownie (approx. 2 inches square)
- Calories: 320 kcal
- Sugar: 28 g
- Sodium: 140 mg
- Fat: 18 g
- Saturated Fat: 7 g
- Unsaturated Fat: 9 g
- Trans Fat: 0 g
- Carbohydrates: 39 g
- Fiber: 3 g
- Protein: 4 g
- Cholesterol: 55 mg
Keywords: monster cookies, fudgy brownies, chocolate chip, monster cookie brownies, layered dessert, chewy brownies, chocolate dessert