Monster Cookie Fudgy Brownie Bars: The Ultimate Dessert Mashup!

Delicious Monster Cookie Fudgy Brownie Bars in a baking pan, topped with colorful M&Ms and chocolate chips.

Get ready for a dessert experience that will blow your mind! These Monster Cookie Fudgy Brownie Bars are the ultimate mashup of two beloved treats: rich, fudgy brownies and soft, chewy monster cookies. Imagine sinking your teeth into a decadent chocolate brownie base, perfectly paired with a peanut butter and oat-filled cookie topping loaded with mini chocolate chips and colorful M&Ms. It's pure bliss in every bite!

This recipe brings together the best of both worlds, creating a truly unique and irresistible dessert. Whether you're a brownie aficionado or a monster cookie fanatic, these bars are guaranteed to satisfy your sweet cravings. They're perfect for parties, potlucks, or simply as a special treat for your family.

Why You'll Love These Brownie Bars

These aren't just any ordinary brownies or cookies; they're an elevated experience! Here's why these Monster Cookie Fudgy Brownie Bars will become your new favorite:

  • The Perfect Texture Combo: You get the best of both worlds – the dense, fudgy chewiness of a brownie with the soft, slightly crispy edges of a monster cookie.
  • Flavor Explosion: Rich chocolate, creamy peanut butter, sweet oats, and colorful candies all come together in a harmonious blend.
  • Crowd-Pleaser: Everyone, from kids to adults, will adore these bars. They're visually appealing and taste even better!
  • Easy to Make: While there are two layers, the steps are straightforward and the result is well worth the effort.

Tips for Baking Success

Achieving bakery-quality bars at home is easier than you think with these helpful tips:

Choosing Your Ingredients

Using high-quality ingredients makes a noticeable difference. For the brownie base, opt for Dutch-process cocoa powder for a deep, rich chocolate flavor. For the monster cookie topping, creamy peanut butter works best, and quick oats give it that classic chewy texture.

Don't Overmix

When mixing the brownie batter and cookie dough, be careful not to overmix. Overmixing can develop the gluten in the flour, leading to a tougher texture. Mix just until the ingredients are combined.

The Importance of a Good Pan

A high-quality baking pan ensures even baking and easy release. Make sure to line your pan with parchment paper, leaving an overhang on the sides, to easily lift the cooled bars out before cutting. This also makes for easier cleanup! Speaking of kitchen tools, a good, sharp Quality Chef's Knife can make prepping ingredients a breeze, from dicing butter to chopping chocolate.

Cooling is Crucial

It can be tempting to cut into these delicious bars right away, but cooling them completely is essential. This allows them to set properly, giving you clean cuts and the perfect fudgy-chewy texture.

Variations and Substitutions

Feel free to get creative with your Monster Cookie Fudgy Brownie Bars! Here are a few ideas:

  • Nut Butter Swap: If you're not a fan of peanut butter or have allergies, almond butter or cashew butter can be used instead in the cookie topping.
  • Candy Options: Beyond M&Ms and chocolate chips, consider adding chopped pretzels for a salty crunch, mini Reese's Pieces, or even white chocolate chips.
  • Espresso Powder: A teaspoon of instant espresso powder in the brownie batter can deepen the chocolate flavor without making it taste like coffee.

These Monster Cookie Fudgy Brownie Bars are more than just a dessert; they're a celebration of flavor and texture. So gather your ingredients, preheat your oven, and get ready to bake a batch of pure happiness. You won't regret it!

FAQs

Can I use different types of chocolate chips or candies?

Absolutely! Feel free to customize your Monster Cookie Fudgy Brownie Bars with your favorite chocolate chips (dark, white, butterscotch) or candies. Reese's Pieces, chopped peanut butter cups, or different colored M&Ms would all be delicious additions or substitutions.

What's the secret to getting fudgy brownies?

The key to fudgy brownies lies in using a higher fat-to-flour ratio, incorporating both butter and oil, and importantly, not overbaking them. Taking them out of the oven when the edges are set but the center still looks slightly underdone will ensure a moist, fudgy texture after cooling.

Do I need to use quick oats for the cookie topping?

Yes, quick oats are recommended for the monster cookie topping as they provide a softer, chewier texture that blends well into the cookie dough. Rolled oats can be used in a pinch, but they may result in a slightly chewier and more textured cookie layer.

Print
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Delicious Monster Cookie Fudgy Brownie Bars in a baking pan, topped with colorful M&Ms and chocolate chips.

Monster Cookie Fudgy Brownie Bars


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  • Total Time: 55 minutes
  • Yield: 16 bars 1x
  • Diet: Standard

Description

These ultimate dessert bars feature a rich, chewy brownie base topped with a soft, peanut butter-oat monster cookie layer loaded with mini chocolate chips and M&Ms.


Ingredients

Scale

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
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&Ms


Instructions

Step 1: Preheat your oven to 350°F (175°C). Line a 9x13 inch baking pan with parchment paper, leaving an overhang on the sides, and lightly grease.
Step 2: For the Brownie Base: In a large microwave-safe bowl, melt the 5 tablespoons unsalted butter. Add 1 1/3 cups granulated sugar and whisk vigorously for about 1 minute until well combined and slightly shiny.
Step 3: Whisk in the 2 large eggs and 1 egg yolk one at a time, mixing well after each addition until the mixture is thick and glossy. Stir in the 1/3 cup oil and 1 tsp pure vanilla extract.
Step 4: In a separate bowl, combine 1/2 cup all-purpose flour, 3/4 cup unsweetened cocoa powder, 1 tablespoon cornstarch, and 1/4 tsp salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in 1/2 cup semi-sweet chocolate chips and 1/2 cup milk chocolate chips.
Step 5: Pour the brownie batter into the prepared pan and spread evenly. Set aside.
Step 6: For the Monster Cookie Topper: In a medium bowl, whisk together 1/2 cup all-purpose flour, 1 tsp cornstarch, 1/2 tsp baking soda, 1/8 tsp baking powder, and 1/4 tsp salt.
Step 7: In a separate large bowl, cream together 1/4 cup room temperature unsalted butter, 1/3 cup brown sugar, and 1/8 cup white granulated sugar until light and fluffy. Beat in 1/4 cup creamy peanut butter and 1 tsp pure vanilla extract.
Step 8: Add the 1 large room temperature egg and mix until just combined. Gradually add the dry ingredients to the wet ingredients, mixing until combined. Fold in 1/2 cup quick oats, 1/2 cup mini chocolate chips, and 1/2 cup mini M&Ms.
Step 9: Dollop spoonfuls of the monster cookie dough over the brownie batter in the pan. Gently spread and press the cookie dough to create an even layer over the brownie base, covering it completely.
Step 10: Bake for 28-32 minutes, or until the edges are set and a toothpick inserted into the cookie layer comes out with moist crumbs (not wet batter). The center may still look slightly soft.
Step 11: Remove from the oven and let cool completely in the pan on a wire rack before lifting out and cutting into bars. This is crucial for fudgy brownies and clean cuts. Enjoy!

Notes

For an extra touch, sprinkle a pinch of sea salt on top of the bars after baking while they are still warm.

  • Prep Time: 25 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 bar
  • Calories: 380 kcal
  • Sugar: 39g
  • Sodium: 170mg
  • Fat: 19g
  • Saturated Fat: 9g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 52g
  • Fiber: 3g
  • Protein: 5g
  • Cholesterol: 45mg

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