Smashed Potatoes with Yogurt and Chives

Place unpeeled potatoes (do not pierce) in very large microwave-safe bowl. Cover with vented plastic wrap. Microwave on High 15 to 16 minutes or until fork-tender. Uncover (leaving any accumulated liquid in bowl); add margarine, salt, and ground black pepper. With potato masher, coarsely mash potatoes.

Stir in yogurt and half of chives until combined. Spoon into serving bowl; cover with plastic wrap to keep warm. If necessary, reheat in microwave just before serving. Sprinkle with remaining chives to serve.