Chip Lover’s Cupcakes

Directions

1. Prepare cake batter according to package directions; set aside. For filling, in a small bowl, cream butter and sugars until light and fluffy. Gradually beat in flour and confectioners' sugar until blended. Fold in chocolate chips.
2. Fill paper-lined muffin cups half full with cake batter. Drop filling by tablespoonfuls into the center of each; cover with remaining batter.
3. Bake at 350° for 20-22 minutes or until a toothpick inserted in cake comes out clean. Cool for 10 minutes before removing from pans to wire racks to cool completely.
4. For frosting, in a large bowl, cream the butter, shortening and confectioners' sugar until smooth. Beat in 3 tablespoons milk and vanilla until creamy. Set aside 1 cup frosting; frost cupcakes with remaining frosting.
5. Stir baking cocoa and remaining milk into reserved frosting. Cut a small hole in a corner of a pastry or plastic bag; insert star tip. Fill bag with chocolate frosting. Pipe a rosette on top of each cupcake; garnish with a cookie.