Slice squash and cook until tender. Saute onion in 1/2 cup margarine and mix with squash. Add crumbled crackers, eggs, seasonings and cheese. Place mixture in a two-quart casserole. Combine melted margarine with cracker crumbs. Sprinkle over squash mixture. Bake at 350F until bubbling hot.
Cajun Country -- New Iberia, Louisiana