2 lbs. sirloin steak
1/4 c. butter
1 can (6 oz.) sliced mushrooms, drained
2 cans (10 1/2 oz.) condensed beef broth
1/3 c. instant minced onion
1/4 c. catsup
1 1/2 tsp. garlic salt
1/3 c. flour
2 c. sour cream
8 to 10 oz. med. noodles
3 tbsp. butter

Cut meat across the grain into 3/4 inch slices, then into strips, 3 x 1/4 inch. Melt 1/4 cup butter in large skillet. Cook and stir mushrooms in butter about 5 minutes. In the same skillet, brown meat. Reserving 2/3 cup of the broth, stir in remaining broth, onion, catsup, and garlic salt. Cover and simmer 15 minutes. Blend reserved broth and flour. Stir meat. Add mushrooms; heat to boiling, stirring constantly. Boil and stir 1 minute. Stir in sour cream. Heat through. Serve over cooked noodles, tossed with 3 tablespoons butter. 6 to 8 servings.