GREAT BURGERS

4 hamburger buns
1 lb. hamburger, brown with onion and cool
1 onion, chopped
1 cup condensed cream of tomato soup
3/4 cup green and black olives, mixed
1/2 cup mayonnaise
1 small can mushrooms, drained
Pinch of oregano
1/2 lb. grated mozzarella cheese

Preheat oven to 300 degrees F. Place the bottoms of 4 hamburger buns in a baking pan; set aside.

Brown ground beef with the onion; drain and cool.

Mix soup, olives, mayonnaise, mushrooms, and oregano with the browned hamburger. Divide mixture on the buns in the pan. Top each with the mozzarella cheese.

Bake at 300 degrees for 30 minutes. Serve hot.