01 - Preheat a grill or grill pan over medium-high heat.
02 - Lightly brush the watermelon cubes with 15 ml of olive oil.
03 - Grill the watermelon cubes for 2 to 3 minutes per side until charred and caramelized at the edges. Remove from grill and let cool slightly.
04 - In a large mixing bowl, combine the grilled watermelon, diced cucumber, crumbled vegan feta, mint, and basil.
05 - In a small bowl, whisk together the remaining olive oil, lime juice, agave syrup, sea salt, and black pepper.
06 - Pour the dressing over the salad mixture and gently toss until evenly coated.
07 - Transfer the salad to a serving platter. Garnish with lime zest and a sprinkle of flaky sea salt if desired. Serve immediately.