Description

These Chewy M&M Christmas Cookie Bars are soft, buttery, and bursting with festive colors! Perfect for Christmas parties, cookie exchanges, or holiday movie nights, they deliver the classic flavor of chocolate chip cookies in easy-to-slice bar form. With melty chocolate chips and red-and-green M&Ms, these bars are a guaranteed hit that taste like Christmas cheer in every bite.

Ingredients

Scale

2 ¼ cups all-purpose flour
½ tsp baking soda
½ tsp salt
¾ cup unsalted butter, melted and cooled
1 cup brown sugar, packed
½ cup granulated sugar
1 large egg + 1 egg yolk
2 tsp vanilla extract
¾ cup semisweet chocolate chips
½ cup white chocolate chips

1 cup red and green M&Ms

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Instructions

Preheat oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper and lightly grease.
In a bowl, whisk together flour, baking soda, and salt.
In another bowl, whisk melted butter, brown sugar, and granulated sugar until smooth.
Add egg, egg yolk, and vanilla; mix well.
Gradually fold in the dry ingredients until combined.
Stir in chocolate chips and half the M&Ms.
Spread dough evenly in the pan and top with remaining M&Ms.
Bake for 20–24 minutes, or until edges are golden and center is just set.

Cool completely before cutting into bars.

Notes

For extra chewiness, slightly underbake the bars. Swap M&Ms for peanut butter chips, crushed candy canes, or caramel bits for fun flavor variations.