Taco Salad

2 lbs. ground beef
2 pkgs. taco seasoning mix
16 oz. cheddar cheese, shredded
1 red onion, chopped
1 yellow onion, chopped
2 heads of lettuce (preferably iceberg), chopped
4 tomatoes, chopped
2 avocados, chopped
2 green peppers, chopped
1 can black olives, chopped
1 large bag of Doritos nacho chips, crumbled
1 ( 8oz.) bottle Catalina salad dressing

Brown ground beef with chopped yellow onion. Add 1 pkg. of taco seasoning and water according to package directions. Set aside to cool completely. In a large bowl mix together chopped lettuce, tomato, cheese, avocado, red onion, peppers, olives, and 2nd pkg. of taco seasoning. Add cooled beef mixture. Just before serving toss with the dressing and the last step is to mix in 3/4 of the package of crushed Doritos, leaving the rest on the side for people who want extra. (they get soggy if you do them too early.) Enjoy!