Can you freeze cooked mushrooms? Yes, though they soften after thawing and work best in soups, sauces, and casseroles.
Essential Concepts
Cool promptly; freeze airtight; use within two to three months for best quality.
Related reading:
https://www.foodsafety.gov/food-safety-charts/cold-food-storage-charts
https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/leftovers-and-food-safety
