Cook squash in small amount of water until tender. Drain well and mash.
In a separate bowl, beat eggs. Saut? onion in margarine. Add squash, eggs, milk, brown sugar and salt to onions. Mix well.
In a buttered 2-quart casserole put 1 layer of 10 crushed crackers, 1 layer of squash mixture and 1 layer of cheese. Repeat the 3 layers. Top with cracker crumbs and dots of butter. Bake, uncovered, at 350 degrees F for 45 minutes. Can be frozen. |