After perfecting a cupcake recipe, don’t top it with this dulce de leche buttercream frosting. Your tasters will be so frosting-focused that they won’t notice the cake you worked so hard on. Save this sweet, salty, smooth dulce de leche buttercream frosting to top a cupcake gone bad – one that’s too dry, ugly looking, or one where the batter overflowed in the oven. With a simple swirl, your cupcake will be redeemed. Isn’t cupcake magic fun?