Question: do you have to refrigerate homemade buttercream frosting?
Answer: Does buttercream frosting need to be refrigerated? If you want to make the frosting ahead of time, store it in the fridge, in an airtight container, for up to 3-4 days. ... If you intend to keep cupcakes or cake for longer than a day, store in the fridge and bring to room temperature before serving.