Lofthouse Cookies

           2 1/4 cups flour
           1/2 teaspoon baking powder
           1/4 teaspoon baking soda
           1 tablespoon cornstarch
           1/2 teaspoon salt
           1/2 cup butter, room temperature
           1 cup sugar
           1 egg, room temperature
           1/4 cup sour cream, room temperature
           1 1/2 teaspoon vanilla extract

          Buttercream Frosting
           1/2 cup butter, room temperature
           2 cups powdered sugar
           1 teaspoon vanilla
           2 tablespoons milk
           Food coloring
           Sprinkles

     Preheat oven to 375°

     Combine the first 5 ingredients in a bowl, whisk together.
     Cream together butter and sugar until fluffy. Beat in egg,
     vanilla and sour cream. Scrape bowl as needed. Add dry
     ingredients to wet 1/2 cup at a time, mix well between
     additions. Shape dough into a disk and wrap in plastic
     wrap and chill for at least 1 hour. Roll dough to 1/4 inch,
     cut out with a 3 inch cookie cutter. Bake for 8-9 minutes.
     cool completely.

     For frosting, cream butter, add powdered sugar, vanilla,
     milk and food coloring, beat until smooth. Top cookies
     with sprinkles.