Betty Crocker Whipped Butter Cream Frosting is great for cakes and cupcakes. Be inspired with great Birthday ideas! Find tips, recipes and inspiration at bettycrocker website/birthdays. One tub frosts: one 13"x9" cake, or one 8" or 9" 2 layer cake, or 24 to 32 cupcakes. Cool cake completely before frosting. Store cake loosely covered. Cover and refrigerate left over frosting up to 2 weeks. Tip: stir room-temperature frosting 20 times. Do not heat or microwave. Color: Dark Pebble.