Walking taco casserole (Mexican hot dish from my ex-in-law Sue)

Medium or family size bag of nacho cheese flavored chips

ground beef or sirloin

diced onion

packages taco seasoning

(16 ounce) sour cream

(24 ounce) cottage cheese

salsa or taco sauce

grated cheddar cheese

Toppings of choice like shredded lettuce, black olives, sour cream, shredded cheese, taco sauce, tomatoes, etc.