How Do You Store Homemade Buttercream Frosting?
Homemade buttercream frosting can be stored in an airtight container in the refrigerator for up to 2 weeks. To use it, simply let it come to room temperature and give it a quick stir before frosting your cake or cupcakes. You can also freeze buttercream frosting for up to 3 months. To thaw it, simply let it come to room temperature and give it a quick stir before using.