Easy Beef Stroganoff
["1 (8 oz.) pkg. egg noodles", "1 1/2 lb. sirloin tips or top round, cut small", "1 Tbsp. flour", "1 tsp. dry mustard", "salt and pepper", "1 (8 oz.) can sliced mushrooms, not drained", "1/2 small onion, diced", "1/2 c. sour cream", "2 Tbsp. butter or margarine"]
["Prepare noodles as directed.", "In small bowl, mix flour, mustard, salt and pepper.", "Stir in small amount of mushroom liquid until creamy.", "Cook onion in butter for about 5 minutes.", "Add meat and cook until done.", "Add mushrooms and liquid, then add flour mixture.", "Stir over medium heat until mixture is thickened.", "Stir in sour cream.", "Serve over noodles."]
["egg noodles", "sirloin tips", "flour", "dry mustard", "salt", "mushrooms", "onion", "sour cream", "butter"]