Grilled Sweet Potato Slices

Preheat grill to medium. Combine oil, paprika, cumin and ¼ teaspoon salt in a medium bowl; add sweet potatoes and toss to coat. Combine yogurt, chipotle, lime juice and the remaining ¼ teaspoon salt in a small bowl; set aside.

Place sweet potatoes on oiled grill rack (see Tip); grill, uncovered, until grill marks appear on both sides and the sweet potatoes are tender, 4 to 5 minutes per side. Transfer to a serving platter. Garnish with cilantro (or scallions), if desired; serve with the chipotle sauce.