Swiss Steak in Sour Cream

Recipe is from Lola.

3 lb. round steak, cut 2-inches thick
Flour
Salt and pepper
Fat
2 onions, sliced
½ cup water
½ cup sour cream
2 TB grated cheese (or Cheez Whiz)
¾ tsp paprika

Dredge the steak with flour; season it to taste with salt and pepper. Brown it on both sides in hot fat. Add the remaining ingredients; cover pan closely and simmer for about 2 ½ hours, until the meat is tender.