2 - 10 oz. boxes frozen mixed vegetables
1/2 c. chopped onion
1/2 c. chopped celery
1 c. sharp cheddar cheese, grated
1 c. mayonnaise
1 can sliced water chestnuts, drained
1 small container sour cream
2 cups Ritz crackers, crushed
1 stick butter

Cook frozen vegetables for 5 minutes, drain. Mix vegetables with next 6 ingredients and put in large baking dish. Cover with crushed crackers. Melt stick of butter and drizzle over crackers.

Bake at 350°F for 45 minutes.