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Christmas M&M Cookie Bars

Thick, chewy, and festive cookie bars loaded with holiday M&Ms and chocolate chips. The perfect easy dessert for Christmas baking.
Print Recipe
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings: 16 bars
Course: Dessert, Snack
Cuisine: American, Holiday
Calories: 210
Ingredients Equipment Method Notes

Ingredients
  

Cookie Dough
  • 0.5 cup unsalted butter melted and slightly cooled
  • 1 cup light brown sugar packed
  • 0.25 cup granulated sugar
  • 1 large egg room temperature
  • 1 tbsp vanilla extract
  • 1.5 cups all-purpose flour
  • 0.5 tsp baking powder
  • 0.5 tsp baking soda
  • 0.5 tsp salt
Mix-ins
  • 1 cup Christmas M&Ms divided
  • 0.5 cup chocolate chips semi-sweet

Equipment

  • 8x8 or 9x9 Baking Pan
  • Mixing bowl
  • Whisk
  • Parchment paper

Method
 

  1. Preheat oven to 350°F (175°C). Line an 8x8 or 9x9 inch square pan with parchment paper.
  2. In a large bowl, whisk melted butter, brown sugar, and granulated sugar until smooth.
  3. Add egg and vanilla extract, whisking until combined.
  4. Stir in flour, baking powder, baking soda, and salt until just mixed.
  5. Fold in chocolate chips and 3/4 cup of the M&Ms.
  6. Press dough evenly into the prepared pan. Top with remaining M&Ms.
  7. Bake for 20-25 minutes until edges are golden and center is set.
  8. Cool completely in the pan before slicing into squares.

Notes

Do not overbake. Bars will firm up as they cool.