How long do boxed meals and instant sides last?

Boxed meals and instant sides keep 9–12 months in the pantry, according to USDA FoodKeeper.

Quick answer

Fridge—No FoodKeeper guidance
Freezer—No FoodKeeper guidance
Pantry9–12 months 

Storage times by type

TypeFridgeFreezerPantry
Dry stuffing mix (commercially packaged)——
  • Unopened: 9–12 months
USDA tips: Pantry: Do not refrigerate.
Potatoes (instant)——
  • Unopened: 10–15 months from purchase
  • Opened: 6–12 months after opening

Also covers: mac and cheese, mac cheese, macaroni and cheese, macaroni cheese, shells and cheese, shells cheese, ramen, instant noodles, cup noodles, stuffing, stuffing mix, rice mix, instant potatoes, instant mashed potatoes, mashed potato flakes.

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These are general guidelines from the USDA’s FoodKeeper data for food stored at safe temperatures: fridge at 40°F (4°C) or below, freezer at 0°F (−18°C). Freezer times are for best quality; food kept constantly frozen at 0°F stays safe longer. Always check the package and the food itself. When in doubt, throw it out. Shelf Shepherd isn’t affiliated with or endorsed by the USDA.

Source: USDA FSIS FoodKeeper data. Last reviewed November 5, 2026.