Vanilla flavour icing. Ready to spread Each tub contains enough icing to cover and fill an 8 cake (serves 12) or cover up to 27 cupcakes. Store in a cool, dry place before opening. Once opened seal and refrigerate any remaining icing for up to 30 days for future creations!. Betty's promise is simple: with over a century of globally inspiring makers, Betty Crocker encourages everyone regardless their skill level, gender or age to cherish homemade goods. We promise great taste, quality and convenience. Love Vanilla?. Try our Velvety Vanilla Cake Mix!. Loved by bakers since 1921.