Place asparagus in a steamer over 1 inch of boiling water, and cover. Cook until tender but still crisp, about 2 to 6 minutes. Drain and place in a shallow baking dish.
Lay cheese slices over asparagus. In a small bowl combine melted butter, bread crumbs and sesame seeds. Sprinkle over cheese.
Bake in preheated oven for 8 minutes.
Increase oven to broil. Broil just until breadcrumbs are golden brown.
