1 head lettuce
2 tomatoes
1 lb. ground beef
1 pkg. tomato seasoning
1 med. onion
1 (12 oz.) pkg. Cheddar cheese
1 (16 oz.) Catalina salad dressing
1 lg. pkg. Doritos

Brown ground beef. Drain off grease. Add taco seasoning and mix into ground beef. Cut lettuce up. Add diced tomatoes and onions. Add Cheddar cheese. Mix these all together. When ground beef is completely cooled, add to lettuce. When you're ready to serve, crush up Doritos and mix with salad. Then add the Catalina dressing mix and serve.