Grilling the peaches caramelizes their natural sugar. Serve with grilled pork, fish—like striped bass—or chicken. Refrigerate for up to three days.
1. Prepare grill to medium-high heat.
2. Lightly coat peaches and onion with cooking spray. Place peaches and onion on grill rack coated with cooking spray; grill peaches 2 minutes on each side. Cool and chop peaches. Grill onion 3 minutes on each side. Cool and chop onion. Combine peaches, onion, cilantro, and remaining ingredients in a medium bowl; toss well. Let stand 15 minutes.