Start by preparing your ingredients. Dice the watermelon into bite-sized pieces and place them in a large serving bowl.
Crumble the feta cheese over the top of the diced watermelon.
Add the chopped fresh mint leaves and thinly sliced red onion to the bowl.
In a small bowl, whisk together the olive oil and balsamic vinegar until well combined.
Drizzle the dressing over the watermelon, feta, mint, and onion mixture.
Gently toss everything together to combine, being careful not to mash the watermelon.
Season with salt and pepper to taste.
Notes
Serve in a large platter or individual bowls, garnishing with additional mint leaves for a pop of color. Adding a sprinkle of extra feta on top can enhance visual appeal as well!