1 (7 oz.) can tuna
1 tbsp. chopped onion
1/3 c. milk
7-8 oz. cooked noodles
1 can cream of chicken soup
1 tbsp. butter
3/4 c. crushed potato chips

Saute onion in the butter; stir in the soup, milk and mix well. Break tuna in chunks. Mix all this lightly with soup mixture and noodles. Place in a greased casserole dish. Top with crushed potato chips. Bake at 350 degrees for 30 minutes.