01 - Preheat the grill to medium heat.
02 - Brush the peach halves with olive oil and season with salt and black pepper.
03 - Place the peaches cut-side down on the grill and cook for 4 to 5 minutes, until softened and grill marks are visible.
04 - Remove the peaches from the grill and allow them to cool slightly.
05 - In a large mixing bowl, combine arugula or mixed greens, grilled peach halves, crumbled feta, and toasted walnuts.
06 - Drizzle the salad with balsamic glaze and toss gently. Serve immediately.