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Colorful Monster Brownies with rich chocolate and peanut butter

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A rich, fudgy brownie base meets the playful crunch and chew of a classic monster cookie — loaded with oats, chocolate chips, peanut butter, and colorful candy pieces.

Ingredients

Scale

Brownie Base:

  • ½ cup unsalted butter (melted)

  • ¾ cup granulated sugar

  • ¼ cup brown sugar

  • 2 large eggs

  • 1½ tsp vanilla extract

  • ½ cup unsweetened cocoa powder

  • ½ cup all-purpose flour

  • ¼ tsp salt

  • ½ tsp espresso powder (optional)

Mix-Ins:

  • ½ cup old-fashioned oats

  • ½ cup semi-sweet chocolate chips

  • ½ cup M&Ms or candy-coated chocolates

  • ¼ cup peanut butter chips (optional)

  • ¼ cup creamy peanut butter (for swirling)

Instructions

  • Preheat oven to 350°F. Line and grease a 9×9-inch pan.

  • Whisk melted butter with sugars. Add eggs and vanilla; mix well.

  • Sift in cocoa, flour, salt, and espresso powder. Stir until smooth.

  • Fold in oats, chocolate chips, M&Ms, and peanut butter chips.

  • Spread batter in pan. Dollop peanut butter on top and swirl.

  • Bake 28–34 minutes, until center is set with moist crumbs.

  • Cool completely before slicing. Chill for clean cuts.

Notes

  • Use crunchy peanut butter for extra texture.

  • Reserve candy for topping after baking.

  • Store at room temp 3–4 days or freeze up to 2 months.

Find it online: https://flavorlyzo.com/colorful-monster-brownies-with-rich-chocolate-and-peanut-butter/