Mrs Willis' World Famous Squash Casserole (as prepared at Mrs Willis' restaurant in Morehead City, NC) Sauté Squash and onions in butter salt and pepper (to taste). And don't be stingy with the butter (lol). Then (for just a regular casserole size), add 1 can of cream of chicken soup and about 4 or 5 oz of sour cream. Mix all together in sauté pan. Salt and pepper again to taste. Take casserole dish, sprinkle small amount of Pepperidge Farms bread crumbs in bottom of dish with melted butter, pour your mixture in and sprinkle more Pepperidge Farms bread crumbs on top. Bake at 350 degrees for about 30 mins. Enjoy greatly !