1 (16 ounce) package cauliflower
1/2 cup mayonnaise
1 can cream of mushroom soup
1 cup shredded cheddar cheese
1/2 to 3/4 cups fine bread crumbs.
Partially steam vegetables. Add onion, mayonnaise, soup and 1/2 of the cheese. Mix. Cover with remaining cheese and bread crumbs. Bake at 350 degrees for 30 minutes.