01 - Rinse quinoa thoroughly under cold running water. Combine quinoa, water, and salt in a medium saucepan. Bring to a rolling boil over high heat, then reduce to low, cover, and simmer for 15 minutes until all liquid is absorbed. Remove from heat, fluff with a fork, and allow to cool completely.
02 - Preheat a grill or grill pan to medium-high heat. Lightly brush the cut sides of the peach halves with olive oil. Place peaches cut side down on the grill and cook for 2–3 minutes until distinct grill marks form. Flip and grill for an additional 2 minutes. Remove from heat, let cool slightly, then slice into wedges.
03 - In a large salad bowl, combine the cooled quinoa, halved cherry tomatoes, diced cucumber, thinly sliced red onion, and grilled peach wedges.
04 - In a small bowl, whisk together the lime zest, lime juice, olive oil, honey or maple syrup, sea salt, and black pepper until well emulsified. Pour the dressing over the salad and toss gently to coat all ingredients evenly.
05 - Fold in the torn basil leaves. Sprinkle with crumbled feta cheese and toasted pine nuts or almonds if desired. Serve immediately at room temperature, or refrigerate for up to 2 hours before serving for a chilled preparation.