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4.5 from 2 votes

Patriotic M&M Party Cookie Bars

These Patriotic M&M Party Cookie Bars only need you and your mouth.  That’s a celebration in itself!  You won’t be able to wait to bite into these thick and chewy cookie bars loaded with fun, festive red, white and blue peanut butter M&M’s & milk chocolate chips!  
Prep Time10 mins
Cook Time30 mins
Course: Dessert, Snack
Cuisine: American
Keyword: chocolate chips, cookie bars, M&Ms, patriotic desserts, peanut butter, red white and blue
Servings: 9 Servings
Author: Kim Lange


  • 1/2 cup unsalted butter at room temperature
  • 1/2 cup brown sugar
  • 1/2 cup granulated sugar
  • 1 large egg
  • 1 teaspoon vanilla
  • 1 ½ cups all-purpose flour
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup chocolate chips plus more for tops if desired
  • 1/2 cup M&M’s plus more for tops if desired


  • Preheat the oven to 350°F.
  • Line an 8x8 pan with parchment paper or foil. Leave an overhang for easy removal. Then spray with non-stick cooking spray.
  • Using a mixer, in a large bowl, cream room-temperature butter and sugars together. Add in the egg and vanilla and mix together until combined.
  • Add the flour, baking soda and salt and stir mixture just until combined. Fold in the chocolate chips and M&M’s.
  • Scoop dough into pan and spread out using a spoon or spatula.
  • Add extra chocolate chips and M&M's on top if desired.
  • Bake for 30-35 minutes and the center isn't jiggly, not overbaking cooking bars.
  • Allow to cool completely, then remove from pan and cut into bars.


  • Can also bake recipe in 9x9, reduce baking time to 22-28 minutes.
  • Double recipe for 9x13 pan size for larger crowds.