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Ultimate Chewy Christmas Cookie Bars with M&Ms and Sprinkles

A close-up of thick, chewy christmas cookie bars topped with red and green M&Ms and festive sprinkles.

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Welcome to My Kitchen! These ultimate chewy Christmas cookie bars are simple to make and packed with festive M&Ms and sprinkles. They are the perfect one-pan Christmas baking idea for your holiday gatherings.

Ingredients

Scale
  • 1 cup unsalted butter, softened
  • 1 cup packed brown sugar
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 2 1/4 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup M&M’s (red and green preferred)
  • 1 cup semi-sweet chocolate chips
  • 1/2 cup Christmas sprinkles

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  2. In a large bowl, beat the softened butter, brown sugar, and granulated sugar together until the mixture is creamy.
  3. Beat in the eggs one at a time, then mix in the vanilla extract.
  4. In a separate medium bowl, whisk together the flour, baking soda, and salt.
  5. Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined. Do not overmix.
  6. Gently fold in the M&M’s, chocolate chips, and most of the Christmas sprinkles, reserving some sprinkles for the top.
  7. Press the dough evenly into the prepared 9×13 inch pan. Sprinkle the remaining reserved sprinkles over the top.
  8. Bake for 22 to 25 minutes, or until the edges are lightly golden brown and the center is set. For chewy bars, slightly underbake.
  9. Let the bars cool completely in the pan on a wire rack before lifting them out using the parchment paper overhang.
  10. Once cool, slice into squares. These are great make ahead Christmas treats.

Notes

  • For the chewiest texture, use brown sugar and avoid overbaking. The center should look slightly soft when you remove them from the oven.
  • You can substitute M&M’s with any holiday candy or nut mixture you prefer for a different flavor profile.
  • These bars are excellent for kid friendly holiday baking projects as there is no scooping required.

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