How long does frosting or icing last?
Short answer: Frosting or icing keeps 2–3 weeks once opened in the fridge and 10–12 months in the pantry.
Storage chart
| Pantry | Fridge |
|---|---|
| 10–12 months | 2–3 weeks (after opening) |
Fridge at 40°F (4°C) or colder, freezer at 0°F (−18°C). Freezer times are for best quality; food kept frozen stays safe indefinitely.
Keep it longer
Keep the fridge at 40°F (4°C) or colder and the freezer at 0°F (−18°C). Write the date on containers when you open or cook something.
Common questions
How long does frosting or icing last in the fridge?
2–3 weeks once opened in the refrigerator at 40°F (4°C) or below, according to USDA FoodKeeper data.
How long does frosting or icing last at room temperature?
10–12 months in a cool, dry pantry.
How can I tell if frosting or icing has gone bad?
Throw it out if you see mold, a slimy texture, an off smell or an odd color. For anything perishable, go by the storage time rather than smell: bacteria that cause food poisoning don't usually change how food looks or smells.
More baked goods
Source: USDA FoodKeeper data (USDA Food Safety and Inspection Service). Updated 2026-10-13. General information, not medical advice. When in doubt, throw it out.