Cut steak into 4 pieces. Combine 1 tsp. salt, paprika and flour. Coat steak with flour mixture. Brown in shortening in skillet. Layer steak, onions and potatoes in casserole. Combine remaining ingredients with 1 tsp. salt; mix well. Pour over casserole. Bake, covered, at 350 degrees for 1-½ hours, adding small amounts of water or red wine to prevent dryness.