Aunt Fanny's Squash

3 lbs. yellow squash 1 T sugar
1/2 C chopped onions salt and pepper (to taste)
1 C crushed Ritz crackers 1 cube margarine
2 eggs

Cook squash; drain thoroughly and mash. Add onions, 3/4 C of crackers, sugar, eggs, salt, pepper and 1/2 cube margarine. Mix thoroughly and place in 2-quart dish. Melt remaining butter. Cover the top of casserole with remaining cracker crumbs and melted butter. Cook for 20 minute.