1Heat oven to 450ºF. Generously grease 24 small muffin cups, 1 3/4x1 inch. In medium bowl, beat eggs slightly with fork or wire whisk. Beat in flour, milk, sugar and salt just until smooth (do not overbeat). Fill cups about two-thirds full. Bake 5 minutes.
2Reduce oven temperature to 350ºF. Bake about 10 minutes longer or until crusty and golden brown. Cut a small slit in top of each popover. Insert cheese chunk in each popover. Bake 5 minutes. Immediately remove from pans. Serve hot.