8 cups seedless watermelon – cut into 1-inch cubes, well chilled
2 cups english cucumber – halved lengthwise and thinly sliced
0.5 cups red onion – very thinly sliced
2 tablespoons fresh lemon juice
0.25 cups extra-virgin olive oil
0.5 teaspoons kosher salt
0.25 teaspoons black pepper – freshly ground
0.25 cups fresh mint leaves – finely chopped
6 ounces feta cheese – cut into 0.5-inch cubes
Instructions
Place the sliced red onion in a large mixing bowl. Add the fresh lemon juice and 0.25 teaspoon of the kosher salt, toss to coat, and let sit 10 minutes to lightly soften and mellow.
Whisk the extra-virgin olive oil and black pepper into the bowl with the onions and lemon juice to form a light dressing.
Add the chilled watermelon cubes and sliced cucumber to the bowl and gently toss to coat without crushing the fruit.
Add the feta cheese and chopped mint and fold gently just until evenly distributed.
Sprinkle in the remaining 0.25 teaspoon kosher salt, taste, and adjust seasoning as needed. Serve immediately while cold.