How to Make It
Preheat grill to 350° to 400° (medium-high) heat. Brush both sides of each watermelon quarter with olive oil, and season with desired amount of salt and pepper. Cut prosciutto into thin strips.
Grill watermelon quarters, without grill lid, 1 minute on each side or until grill marks appear.
Transfer watermelon to a serving plate; top with blue cheese, prosciutto strips, and fresh basil. Drizzle watermelon with balsamic glaze. Serve immediately.