2 tbsp. butter
1/2 c. sliced celery
1/4 c. chopped onion
1 can cream of celery soup
1 1/4 c. milk
8 oz. shells, cooked and drained
1 can tuna
Bread crumbs

Melt butter, add celery and onion. Cook, stirring for 3 minutes. Stir in soup and milk.