Festive Christmas Sugar Cookie Bars with Buttercream

This christmas sugar cookie bars brings together balanced, wholesome ingredients into 18 bars with a clear, tested technique. Prep takes about 15 minutes, and total time is roughly 35 minutes. Follow each measured instruction below to ensure perfect texture, authentic flavor, and consistent results every time.

Why This Recipe Works

Thick and chewy holiday sugar cookie bars topped with rich fluffy buttercream frosting and festive sprinkles.

Ingredients You Will Need

1/2 cup unsalted butter, softened to room temperature
1 cup granulated sugar
2 large eggs
1 tsp pure vanilla extract
2 1/4 cups all-purpose flour
1 1/2 tsp baking powder
1/2 tsp salt
1/2 cup festive holiday sprinkles
1/2 cup softened butter (for frosting)
2 cups powdered sugar
2 tbsp heavy cream

Step-by-Step Instructions

Preheat oven to 350°F (175°C) and line a 9×13-inch baking pan with parchment paper.
Cream together the softened butter and granulated sugar until light and fluffy.
Beat in the eggs one at a time, followed by the vanilla extract.
Whisk flour, baking powder, and salt in a separate bowl, then gradually mix into wet ingredients.
Press the thick cookie dough evenly into the prepared baking pan using clean fingertips.
Bake for 18-20 minutes until the edges are lightly golden, then cool completely on a wire rack.
Whip buttercream frosting, spread smoothly over cooled bars, and top with holiday sprinkles before slicing.