Mac and Cheese
The answer
Mac and cheese lasts 3–4 days in the fridge and 1–2 months in the freezer.
Caution Dairy-based leftovers spoil quickly — refrigerate within 2 hours.
How long it keeps
Fridge (40°F) 3–4 days safe window
Freezer (0°F) 1–2 months best quality
Room temp 2 hours max then discard
Discard Discard if held above 40°F for more than 2 hours, or above 90°F for more than 1 hour.
By state & packaging
State Fridge Freezer
Cooked mac and cheese 3–4 days 1–2 months
Signs it has gone bad
✕ Sour smell
✕ Dry crust with off odor
✕ Mold
FAQ
Is leftover mac and cheese good after a week?
No. Discard after 3–4 days in the refrigerator.