2 lb. hamburger
1 med. onion
3/4 c. catsup
10 olives, chopped
2 (8 oz.) bags shredded cheese
Salt and pepper to taste
Oregano

Brown hamburger and onion. Drain and let cool. Add salt and pepper, catsup, olives, and cheese; mix well. Spread on hamburger. Sprinkle with oregano. Place under broiler until cheese is bubbly. Can also be done in a microwave oven for about 1/2 minute.