The hashbrowns are in the freezer section of the grocery store. Look for a 1 lb bag. However, the bag with peppers and onions may be only 12 ounces. If you can't find a bag with the peppers and onions, use 1 cup of diced onion and 1/2 cup of diced peppers. Saute the peppers and onions until soft, before adding to the casserole.