To make cupcakes, grease and lightly flour thirty 2-1/2-inch muffin cups or line with paper baking cups. Prepare cake as directed in Step 2. Fill each cup half full. Bake in preheated oven for 18 to 20 minutes or until a wooden toothpick inserted in center of a cupcake comes out clean. Cool on a wire rack. Makes 30 cupcakes.