Storing instructions: Store in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to 1 week. Freezing: bake, cool, and store your Applesauce Muffins in freezer bags in the freezer. They will be good for up to 2 months stored this way. To thaw, transfer to the fridge overnight, then set out at room temperature for at least 30 minutes or microwave briefly to take the chill off.