1. Heat oven to 350°F. Beat butter and sugar until creamy. Add egg, vanilla and food colors. Stir together flour, baking powder and salt; gradually add to butter mixture. (Batter will be stiff; stir in last part with wooden spoon or work in with hands.)
2. For each cookie roll about 1 tablespoon dough into ball; flatten slightly and press around one mini peanut butter cup, covering cup completely. Shape into ball. Using wooden pick or edge of knife press lines into dough to resemble markings on basketball. Place on ungreased cookie sheet.
3. Bake 12 to 14 minutes or until set. Remove from cookie sheet to wire rack. Cool completely. Makes about 36 cookies.