Once dough forms, add half Christmas sprinkles and stir in until evenly distributed throughout dough.
4 TBS Christmas sprinkles
Place dough into the prepared baking dish and spread down gently with a spatula to create an even layer in the bake. Bake the sugar cookie bars for 20-25 minutes or until the edges begin to turn golden brown.
Remove from oven and let cool completely.
After bars are completely cooled, lift them out of the pan using the parchment paper. Then use a rubber spatula to frost the sugar cookie bars.
Decorate with the rest of the sprinkles.
4 TBS Christmas sprinkles
Cut into squares and serve.
Frosting
Combine the butter, vanilla extract, salt, and powdered sugar in a bowl and beat until smooth and creamy.
Make sure the bars are completely cooled before frosting so the frosting will set and not just melt all over the place.Store sugar cookie bars in an airtight container at room temperature for up to five days.Change up the sprinkles in the cookie dough and as decorations to turn these into Halloween cookie bars, Easter bars, etc.Freeze these sugar cookie bars. Cut into squares, wrap each individual square in plastic wrap, then put all of the individual bars into a freezer safe container or zipper bag. Freeze for up to three months. Thaw bars individually to room temperature before eating.