Begin by cutting the watermelon into bite-sized cubes and the peaches into thin slices. In a large mixing bowl, gently combine the cubed watermelon, sliced peaches, and thinly sliced red onion. Use a spatula for a careful fold to avoid bruising the fruits.

Next, shower the salad with freshly chopped mint leaves, allowing their fragrant aroma to mingle with the fruits. Crumble feta cheese generously over the top.

In a small bowl, whisk together about three tablespoons of olive oil with two tablespoons of balsamic vinegar. Add a pinch of salt and pepper, adjusting to your taste.

Drizzle the prepared dressing over the fruit mixture in the large bowl. With a gentle hand, toss the ingredients carefully to ensure that every piece is coated evenly.

Serve your vibrant Peach Watermelon Salad immediately for optimal freshness, or chill it in the refrigerator for about 30 minutes.