Shelf Stable Foods
How long does a jar of peanut butter last in the pantry?
Commercial peanut butter keeps 6–24 months sealed in the pantry and 2–3 months once opened — that opened figure is the one to plan around, so buy the jar your household actually finishes.
How long does it keep?
| Pantry, from purchase | 6–24 months |
|---|---|
| Pantry, opened | 2–3 months |
Can it sit out?
Commercial peanut butter is shelf-stable, so sitting out at room temperature isn’t the safety question — storage time is.
How to tell if commercial peanut butter has gone bad
- A sharp, crayon-like smell rising off the surface
- A bitter, scratchy taste at the back of the throat
- A dark, hardened crust around the rim of the jar
- A dried, crumbly paste that won’t spread
When in doubt, throw it out.
Store the jar upside down between uses — the oil redistributes through the paste instead of pooling on top and going first.
Quick answers
How long does a jar of peanut butter last in the pantry?
Commercial peanut butter keeps 6–24 months sealed in the pantry and 2–3 months once opened — that opened figure is the one to plan around, so buy the jar your household actually finishes.
How long can commercial peanut butter sit out?
Sitting out at room temperature isn’t the safety question for commercial peanut butter — storage time is.