1 1/2 lb. ground beef
1/2 onion, chopped
1 can cream of mushroom soup
1 tsp. garlic salt
1/4 tsp. pepper
1 c. shredded sharp cheddar cheese
24 oz. frozen seasoned French fries
In skillet, brown beef with onion; drain fat. Combine beef with soup, salt, and pepper. Spread into the bottom of a greased 9 x 13 foil pan. Sprinkle cheese evenly over the top. Cover evenly with French fries. Cover with foil lid and freeze.
Completely thaw casserole. Bake at 350 for 30 min. Then, increase heat to 400 and continue to bake until fries are crispy and meat mixture is bubbly (15-20 min). Serve with ketchup and mustard, if desired.