1 lg. head lettuce
2 lg. tomatoes, diced
1 lb. hamburger
1 med. onion, diced
1 c. taco cheese
1 bag Doritos
1 bottle Catalina dressing

Fry hamburger and onion until hamburger loses pink color. Let cool. Tear the lettuce into a large bowl. Add hamburger mixture, then tomatoes, cheese, and 1/2 the bag of Doritos. (These should be crushed before adding to salad). Then add Catalina dressing, when you are ready to serve. Serve with remaining Dorito chips.