With an eye to convenience for busy consumers, Ready. Set. Cupcake!, Miami, FL, launches a line of frozen, no-mix cake batters and buttercream frostings. Available in chocolate and vanilla flavors, the oven-ready cake batters and ready-to-use buttercream icings contain no artificial preservatives and are packaged in a professional pastry bag. The batters retail for $6.99 and make 24 mini cupcakes, and the buttercream frostings retail for $7.99 per 12-oz pastry bag and include a pastry tip.