2 lbs. cooked squash or 2 (1 lb.) cans, drained
1/2 c. grated onion
1 c. cream of chicken soup
1 c. water chestnuts
1 c. sour cream
1 stick butter
3 c. bread crumbs

Mix first 5 ingredients. Melt butter and mix with bread crumbs. Put in bottom of large casserole dish. Pour in squash mixture. Bake at 350 degrees for 30 minutes.