COOK potatoes in boiling water in large saucepan 15 to 18 min. or until tender. Drain; return to pan.
SMASH potatoes coarsely with back of large spoon. Stir in dressing.
RESERVE 2 Tbsp. cheese and 1 Tbsp. onions. Add remaining cheese and onions to potatoes; stir just until blended. Top with reserved cheese and onions.
serving size = 1/2 cup (125 mL)
