Per USDA FoodKeeper
On the counterCounter
1 month
cool, dry place
In the fridgeFridge
Not needed
shelf-stable
In the freezerFreezer
Not needed
keeps without freezing
On the counterCounter
2–5 months
cool, dry place
In the fridgeFridge
Not needed
shelf-stable
In the freezerFreezer
Not needed
keeps without freezing
Quick answer
Yes. Marshmallow crème lasts 1 month in the pantry. After that, or sooner if stored badly, it spoils: watch for the signs below.
How to tell if marshmallow crème is bad
Smell
Musty, sour or rancid odour.
Texture
Clumping from moisture, or a damp feel.
Pests
Webbing, holes, or tiny insects in the bag.
Flavour
Flat, stale or bitter taste — quality is gone even if it is safe.
Marshmallow crème past the expiration date
Unopened
FoodKeeper gives unopened marshmallow crème 2–5 months in the pantry, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
Opened
Once opened, the printed date no longer applies. Count 1 month in the pantry from the day you open it.
How to keep marshmallow crème fresh longer
- Store in an airtight container in a cool, dark, dry place.
- Keep away from the stove and dishwasher, where heat and humidity speed spoilage.
- Write the opening date on the pack.
More about marshmallow crème
FAQ
How long does it take for marshmallow crème to go bad?
1 month in the pantry, per USDA FoodKeeper.
Can marshmallow crème expire?
FoodKeeper gives unopened marshmallow crème 2–5 months in the pantry, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
What happens if you eat bad marshmallow crème?
Usually an unpleasant taste rather than illness, but discard anything mouldy, rancid or smelling off.
How do you keep marshmallow crème from going bad?
Store in an airtight container in a cool, dark, dry place.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number