Mrs. T's Potato Cheddar Pierogies

Water, enriched flour (wheat flour, niacin, iron, thiamine, riboflavin, folic acid), potato flakes (potatoes, mono and diglycerides, sodium acid pyrophosphate, citric acid), soybean oil, salt, dehydrated cheddar cheese (cheddar cheese [pasteurized milk, cheese cultures, salt, enzymes], disodium phosphate), onion, natural flavor, eggs, yeast extract, whey, spice, annatto and turmeric (color).