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Classic M&M Cookie Bars Recipe

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  • Author: clara
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Total Time: 35 minutes
  • Yield: 16-20 bars 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Description

These M&M cookie bars are thick, chewy, and packed with colorful chocolate candies! They’re perfect for parties, lunchbox treats, or anytime you need an easy dessert.


Ingredients

Units Scale

  • 1 cup (2 sticks) unsalted butter, melted
  • 1 cup brown sugar, packed
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 2 1/2 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 1/2 cups M&M’s (plus extra for topping)
  • 1/2 cup chocolate chips (optional)

Instructions

  1. Preheat & Prepare Pan:

    • Preheat oven to 350°F (175°C).
    • Grease or line a 9×13-inch baking pan with parchment paper.
  2. Mix Wet Ingredients:

    • In a large bowl, whisk together melted butter, brown sugar, and granulated sugar until smooth.
    • Add eggs and vanilla extract, mixing until well combined.
  3. Combine Dry Ingredients:

    • In a separate bowl, whisk flour, baking soda, and salt.
    • Gradually add dry ingredients to the wet ingredients, stirring until just combined.
  4. Fold in M&M’s & Chocolate Chips:

    • Gently fold in M&M’s and chocolate chips.
  5. Bake the Cookie Bars:

    • Spread the dough evenly into the prepared pan.
    • Sprinkle extra M&M’s on top for a colorful finish.
    • Bake for 25-30 minutes, or until the edges are golden brown and a toothpick inserted in the center comes out clean.
  6. Cool & Serve:

    • Let cool completely before slicing into bars. Enjoy!

Notes

 

  • Want thicker bars? Use an 8×8-inch pan and increase bake time by 5-7 minutes.
  • For a festive twist, use seasonal M&M’s for holidays!
  • Store leftovers in an airtight container for up to 5 days.