Boil onions by heating several inches of salted water (1/2 teaspoon salt to 1 cup water) to boiling. Add onions. Cover and heat to boiling. Cook until tender - 15 to 20 minutes for small onions (30 - 35 for large onions). Drain.
In medium skillet, melt butter with cloves over medium heat, stirring occasionally. Add onions; stir gently until coated.
Sprinkle brown sugar over onions. Cook, turning frequently, about 5 minutes or until golden and glazed.