1 lb. ground beef
1 pkg. taco seasoning
1 bag Doritos (any flavor)
Lettuce
Tomato
Onion
Mayonnais e
Cheddar cheese

Saute ground beef and follow directions on seasoning mix for meat mixture. Crush Doritos in the bottom of a casserole dish. Chop onion, tomato and lettuce and mix with a little mayonnaise to hold together. Put meat mixture on top of Doritos. Put salad mixture on top of meat. Top everything with Cheddar cheese. Heat in oven until cheese melts.