3 lb. round steak
1/2 c. flour
2 tsp. salt
1/8 tsp. pepper
1/2 tsp. dry mustard
2 med. (sliced) onions
2 cans (4 oz.) mushrooms
1 can condensed beef broth
1/4 c. white wine
2 c. sour cream

Cut steak into strips. Combine 1/2 cup flour, salt, pepper and dry mustard; toss with steak strips to coat. Place in crock pot; stir in onion slices and mushrooms. Add beef broth and wine. Stir well. Cover and cook on low for 8 to 10 hours. Before serving, combine sour cream with 1/4 cup flour and stir in crock pot. Serve on buttered rice or noodles.