The frosting recipe isn't new. I've seen it in various forms for years. It is really, really good and easy to work with. Try tinting the frosting different colors and creating something beautiful and uniquely you!
Sugar Cookie Sheet
2 1/2 cups all-purpose flour
1/2 teaspoon baking powder
1/2 teaspoon salt
1/2 cup unsalted butter, softened
1 cup granulated sugar
1 large egg
1 large egg white
2 tablespoons sour cream
1 teaspoon vanilla extract
Vanilla Frosting (recipe follows)
Heat oven to 350 degrees. Line a 9-by-13-inch pan with a strip of parchment, allowing edges to hang over opposite sides. In a large bowl whisk together, flour, baking powder and salt.
In another bowl beat together butter and sugar until light and fluffy. Stir in egg, egg white, sour cream and vanilla and mix until blended. Add flour mixture and stir until just combined.
With greased hands, gently press dough into pan. Bake until the edges are lightly golden, 17 to 19 minutes. Cool completely, then frost and decorate. Use the parchment overhang to lift form pan; slice and serve.
Makes 20 bars.
Vanilla Frosting
6 tablespoons softened unsalted butter
2 1/2 cups confectioners' sugar
3 to 4 tablespoons milk
1/2 teaspoon vanilla extract
1/8 teaspoon salt
food coloring
Beat together butter, confectioners' sugar and milk until fluffy. Stir in vanilla extract and salt. Tint frosting with food coloring.
