No grape jelly on the shelf? Substitute your favorite flavor of jam, preserves or jelly.
Use jelly or jam from a squeezable container to make quick work of adding it to the frosting.
If you have only one pan and a recipe calls for more cupcakes than your pan will make, cover and refrigerate the rest of the batter while baking the first batch. Cool the pan about 15 minutes, then bake the rest of the batter, adding 1 to 2 minutes to the bake time.