1 lb. ground beef
1 onion, diced
1 pkg. taco seasoning
4 tomatoes, diced
1/2 head lettuce, shredded
8 oz. cheese, shredded
1 pkg. corn chips, crushed
1/2 c. water

Brown ground beef and onion together; add seasoning and water. Simmer 20 minutes. In a 9 x 13 inch pan, in this order, layer corn chips, hamburger mixture, tomatoes, lettuce and cheese. Place in oven at 450 degrees and heat until cheese melts. Serve immediately.