Store potatoes in a covered container, they will keep in the fridge for about 4 days. Reheat portion sizes for 1 1/2 to 2 minutes in the microwave. They can also be reheated in the oven or in a frying pan. I love them in the frying pan, chopped up with a spatula, and some easy over eggs! For a longer storage time, scalloped potatoes can also be frozen. Once thoroughly cooled, portion into single servings and place a square of wax paper or plastic wrap between portions. Place in zip-loc freezer bag and then in the freezer. To reheat, simply thaw and reheat per above.