Sweet watermelon shavings get a savory snap from ribbons of scallions and crisped prosciutto.
Preheat oven to 400 degrees. Bake prosciutto on a rack-lined rimmedbaking sheet until crisp, 6 to 7 minutes.Let cool; break each into 2 or 3 pieces.
Remove rind of watermelon. Slice half the watermelon1/4 inch thick; reserve remaining melonfor another use. Transfer to a largeplatter. Refrigerate until ready to use.
Slice scallions (green parts only) ona very sharp bias. Sprinkle watermelonwith salt and pepper. Drizzle with2 tablespoons olive oil; top with prosciuttoand scallions.