Watermelon, Cucumber, Red Onion Salad with Feta July 26, 2021 1000 × 667 Watermelon, Cucumber, and Red Onion Salad with Feta Watermelon, Cucumber, and Red Onion Salad with Feta Watermelon, Cucumber, and Red Onion Salad with Feta is easy to prepare and makes a wonderful refreshing summertime salad perfect for picnics, barbeques, and potlucks.