Zucchini or yellow summer squash

Onion, chopped

Butter

Salt & pepper

Cheddar or Co-jack cheese, grated

Slice squash into little round slices and place a layer in greased casserole dish.  Add a layer of chopped onion, salt and pepper to taste, a few pats of butter and then a layer of grated cheese.  Repeat layers once more.  Cover and bake at 375 degrees until squash is tender.