Melt butter and add stuffing ... casserole dish. Mix squash, soup, and onion. Pour ... Place 1/2 of cheese next, followed with remaining squash, ... cheese is thoroughly melted.
Cook squash, drain and mash. Add ... casserole. Bake at 350 degrees for 40 minutes or until brown and bubbly around edges. Serve about 8. Freezes well.