Peel onions, leaving roots intact.

Cut each onion into eighths, cutting just to the root, but not through.

Place each onion on a lightly greased square of foil.

Press butter into onions, then sprinkle with salt, pepper, and cheese.

Wrap in the foil then arrange in a 13 x 9-inch baking pan.

Bake at 400 for about 1 hour.