1stick(½ cup) salted buttersoftened to room temperature
1cupsugar
1largeegg
1teaspoonvanilla
2cupsall-purpose flour
1teaspoonbaking powder
¼cupfestive sprinkles
For the frosting:
2cupspowdered sugar
1stick(½ cup) salted buttersoftened to room temperature
3tablespoonscream cheesesoftened
1teaspoonvanilla
2tablespoonsmilk
additional sprinkles
Instructions
Preheat oven to 350f degrees. Line a 9"x 9" baking pan with parchment paper.
Beat together butter and sugar until fluffy, then beat in egg and vanilla. Finally, beat in flour and baking powder, a little at a time, until you have a thick batter. Gently stir in the sprinkles.
Spread batter into it prepared baking pan. This will take a few minutes because it is thick. Bake at 350f degrees for 20 minutes or until golden brown.
Once it's finished baking, take cookie bar out of the oven and allow to cool fully. Once it is cooled, carefully lift the sides of the parchment paper to pull the whole cookie bar out of the baking pan.
To make the frosting, blend together powdered sugar, butter, cream cheese, vanilla and milk with an electric mixer. Spread frosting generously on cookie bar, and top with additional sprinkles.
Cut into squares and serve immediately or let frosting set for a firmer feel.