Cookie Dough – 3/4 c. (1 1/2 sticks) butter, room temperature – 1 c. granulated sugar – 1 egg + 1 egg yolk – 1 1/2 tsp. vanilla – 2 1/4 c. all-purpose flour – 1 tsp. baking powder – 1/4 tsp. salt – 1/3 c. red, white and blue sprinkles – 3/4 c. M&M's® Red, White, & Blue Milk Chocolate candies For Frosting – 1/2 c. (1 stick) butter, room temperature – 1 tsp. vanilla – 3 c. powdered sugar – 2-3 Tbsp. milk
In a separate bowl, whisk together the flower, baking powder, and salt. Gradually add the dry ingredients to the wet ingredients, stopping the mixer to scrape down the sides of the bowl. Dough will be thick and slightly stiff. Fold in the sprinkles and M&M's® Red, White, & Blue Milk Chocolate candies to the dough. Mix until just combined.