These Christmas Cookie Bars are the perfect holiday treat! Loaded with holiday M&M’s, easy to make and freezer friendly! You can’t go wrong with adding these to your cookie tray.
Preheat the oven to 350 degrees and mist a 9×13 pan with baking spray. Set aside for later.
Combine the flour, baking soda, salt and espresso powder (if using) in a large measuring cup or small mixing bowl. Gently whisk to combine and set aside.
Place the softened butter into the bowl of an electric mixer fitted with the paddle attachment. Add both of the sugars and beat at low/medium speed for 2 minutes, or until combined and fluffy.
Add the eggs and vanilla extract. Mix an additional minute. Scrape the sides of the bowl and slowly stir in the dry ingredient. Continue to mix until the dough begins to form and the dry ingredients are incorporated fully. Fold in the chocolate.
Spread the dough into an even layer inside the 9×13 pan. The dough will be sticky, just do your best to get a somewhat even layer. I use my fingers or a silicone spatula.
Bake for 25-30 minutes, or until the cookies are lightly browned. Remove and cool completely before serving.