1 pound ground beef and 1/2 cup chopped onion. Cook until brown, then drain off fat. Stir in 1 can condensed cream of vegetable soup, 1/2 teaspoon oregano, dash freshly ground pepper. Heat to bubbling. Turn into 8 1/4 x 1 3/4 inch cake dish.
Mix 1 cup Bisquick mix and 1/2 cup milk. Spread over top of hot meat mixture. Bake in very hot oven (450 degrees) for 15 minutes or until brown.
Spread with 1/2 cup sour cream, sprinkle with 1/2 cup shredded Parmesan cheese, snipped parsley. Bake 2 minutes or place under broiler.