1 head lettuce (lg.)
1 red onion
1 lb. ground beef
1 (7 oz.) pkg. nacho flavor Doritos
1/2 - 3/4 lb. grated cheese
1 lg. bottle Catalina dressing
Louisiana Hot Sauce
Tomatoes (optional)

Tear up lettuce in large bowl. Add chopped onion. Brown, drain and cool ground beef. Crush Doritos. Add cheese, dressing, hot sauce and tomatoes. Mix well.