1 pkg. Shells-n-Cheese macaroni dinner
1 can creamy chicken mushroom soup
1/3 c. milk
1 (6 1/2 oz.) can water pack tuna, drained
Crushed potato chips
Grated cheddar cheese

Prepare the Shells-n-Cheese dinner according to directions on the box. Stir soup and milk into the prepared macaroni shells and cheese. Add the flaked tuna. Spoon into a buttered casserole dish (about 1 1/2-quart size) and top with crushed potato chips.