Thank you Betty Crocker for this classic!

Ingredients:

1 1/2 pounds beef sirloin steak (1/2 inch thick)
8 ounces fresh mushrooms sliced (2 1/2 cups)
2 medium onions thinly sliced
1 garlic clove
finely chopped
1/4 cup butter or margarine
1 1/2 cups beef broth
1/2 teaspoon salt
1 teaspoon Worcestershire sauce
1/4 cup flour
1 1/2 cups sour cream
3 cups hot cooked egg noodles

Instructions: