Cake-Mix Cookies

1 box (18.25) yellow cake mix
1 large egg
1/4 C canola oil
1/4 C buttermilk
Colored sprinkles
1 can (16 oz) vanilla frosting yellow, red, blue food coloring

Preheat oven to 350'. Line cookie sheets with parchment paper; set aside.

Combine the cake mix, egg, oil, and buttermilk in a large bowl. Beat with an electric mixer on medium speed until smooth. Shape 1-inch mounds of batter into balls and flatten slightly. Place about 2 inches apart on the prepared cookie sheets. Top with sprinkles.

Bake until cookies are golden and firm, 8-10 minutes. Cool on a wire rack.

Divide the frosting among three bowls. Use a few drops of food coloring to tint frosting the desired shades of pink, blue, and yellow. Sandwich the cookies together with frosting. Makes 30.