These Chocolate Cupcakes with Sweetened Condensed Milk Frosting are fluffy and soft, and the frosting is silky, and incredibly delicious.
Milk and egg: make sure the milk and egg used in this recipe are at room temperature. To bring the egg to room temperature, simply place it in a container with warm (not hot) water for 5 minutes.
Coffee: feel free to replace the coffee in this recipe with hot water. You could also use hot water and then add 1 tsp of espresso powder to the dry ingredients. Or simply leave all the coffee out.
Chocolate: I've used dark chocolate, since this frosting is on the sweet side. Feel free to use bittersweet, semi-sweet, or even milk chocolate if that's your preference.
Butter: make absolute sure the butter used to make the frosting isn't too warm, or soft, or the frosting simply won't come together.