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Chewy Festive Christmas Cookie Bars

A thick, chewy slice of christmas cookie bars loaded with colorful M&Ms and chocolate chips on a marble surface.

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Make soft, chewy cookie bars loaded with holiday M&Ms and chocolate chips. This recipe is simple to prepare for cookie exchanges or holiday parties.

Ingredients

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  • 1 cup (2 sticks) unsalted butter, softened
  • 1 cup granulated sugar
  • 1/2 cup packed light brown sugar
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 2 3/4 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup semi-sweet chocolate chips
  • 1 cup holiday M&Ms (red, green, brown)
  • 1/2 cup white chocolate chips (optional)

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, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
  3. Beat in the eggs one at a time, then mix in the vanilla extract.
  4. In a separate 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. Fold in the semi-sweet chocolate chips, holiday M&Ms, and white chocolate chips, if using.
  7. Press the dough evenly into the prepared baking pan.
  8. Bake for 25 to 30 minutes, or until the edges are lightly golden and the center is mostly set. A toothpick inserted near the center should come out with moist crumbs attached, not wet batter.
  9. Let the bars cool completely in the pan on a wire rack before lifting them out using the parchment paper overhang.
  10. Cut into squares.

Notes

  • For extra gooey bars, slightly underbake them by about 2 minutes. They will firm up as they cool.
  • You can substitute any holiday mix-ins you prefer, such as chopped pecans or different colored sprinkles.
  • If you want a frosted version, wait until the bars are completely cool before spreading a thin layer of vanilla buttercream on top and decorating with extra M&Ms.

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