When you have leftover frosting, you do not have to throw it away in the trash. While frosting only lasts for a few days in the refrigerator, it will last for a couple months in the freezer. The frosting needs to be stored in an airtight container to protect the consistency of the frosting, and to ensure that freezer burn does not develop. When you are ready to use the frosting, you can simply place it in the refrigerator to defrost it.
Things You'll Need
Scoop the frosting into an airtight container with a spoon.
Place the lid on the container securely.
Tear off a piece of masking tape. Write the name and flavor of the frosting on the masking tape with a permanent marker. Include the date as well.
Place the airtight container in the freezer. Use the frosting within two months for best results.
Thaw the frosting in the refrigerator. Knead the frosting with a spoon to make the consistency uniform.
References and ResourcesBake Decorate Celebrate: Ask Nancy
The Happy Housewife: Freezing Frosting
Pillsbury Baking: Freezing Guidelines