Sour Cream Swiss Steak

1/3 cup flour
1 1/2 teaspoons each salt,pepper,paprika and ground mustard
3 lbs boneless round steak,cut into serving size pieves
3 tablespoons vegetable oil
3 tablespoons butter or margarine
1 1/2 cups water
1 1/2 cups (12oz) sour cream
1 cup finely chopped onion
2 cloves garlic minced
1/3 cup soy sauce
1/4 to 1/3 cup packed brown sugar
3 tablespoons flour

In a shallow bowl, combine flour,salt and pepper, paprika and mustard;dredge the steak. In a large skillet,heat oil and butter. Cook steak on both sides until browned. Carefully add water; cover and simmer for 30 minutes. In a bowl, combine the sour cream onion, garlic,soy sauce,brown sugar and flour; til til smooth. Transfer steak to a greased 2 1/2 qt baking dish, add sour cream mixture. Cover and bake at 325 for 1 1/2 hours or until tender. Yield 6-8 servings