1 lb. ground beef
3 c. crushed tortilla chips
2 c. shredded mozzarella cheese
2 c. shredded cheddar cheese
1 (10 oz.) pkg. mixed salad greens
1 (8 oz.) bottle zesty Italian dressing

In a medium skillet, cook ground meat until brown. Remove and drain. In a large bowl, combine ground beef, tortilla chips, Mozzarella cheese, Cheddar cheese, and salad greens. Toss with salad dressing and serve.