1 can tuna
1 sm. (3 oz.) cream cheese
1 sm. onion, chopped
Milk to moisten
1 pkg. potato chips, sm. crushed
1 pkg. macaroni
1 tsp. mustard
Salt & pepper
1 can mushroom soup

Cook macaroni and drain. Combine other ingredients. Put in a greased casserole and top with chips. Bake at 350 degrees until heated thoroughly.