Preheat oven to 400°F. Butter 10 (2-1/2-inch) muffin cups.
Combine flour, sugar, baking powder, salt and cheese in large bowl. Combine egg, milk and butter in small bowl until blended; stir into flour mixture just until moistened. Spoon into prepared muffin cups, filling 3/4 full.
Bake 20 to 25 minutes or until golden brown. Remove from pan. Serve warm.