You can prepare the stroganoff ahead, except for adding the sour cream. At serving time, reheat stroganoff briefly and stir sour cream into the hot mixture.

1 lb. sirloin steak, cut into strips
1 cup (8 oz.) sliced fresh mushrooms
1 onion, sliced
1 1/2 tablespoons flour
4 teaspoons Gravy Master
1/2 teaspoon dry mustard
1 tablespoon catsup
1/3 cup red wine or beef broth
Salt and pepper to taste
1/3 to 1/2 cup sour cream

Directions:

1. In a 2-quart casserole, sprinkle beef, mushrooms and onion with flour. Stir in Gravy Master, mustard, catsup and wine.
   
2. Cover and cook on HIGH 6 to 8 minutes, stirring occasionally, until beef cooks to your taste. Do not overcook!
   
3. Salt and pepper to taste. Stir in the sour cream. Serve over hot rice or noodles. Makes 4 servings.