Slice squash and cook until tender. Saute onions in 1/2 cup of margarine and mix with cook and drained squash.
Add crumbled crackers, egg, seasoning and cheese. Place in two quart casserole dish.
Combine cracker crumbs and melted margarine. Top the squash mixture. Bake 30 minutes at 350F, or until hot and bubbly.
Cajun Country -- New Iberia, Louisiana