1 lb. ground beef
1 pkg. taco seasoning mix
1 onion
1 sm. head lettuce, shredded
1 sm. can kidney beans, drained
1 tomato, diced
1 (8 oz.) bottle Catalina dressing
1 sm. bag Doritos

Brown ground beef and onion; drain excess fat. Add taco seasoning following directions on package. In large bowl combine lettuce, tomato, kidney beans and ground beef. Break Doritos; add to mixture; cover with Catalina dressing. Serve immediately.