Melon Gazpacho with Ham Crostini

Name: Melon Gazpacho with Ham Crostini
Ingredients: 1/2 to 1 serrano chile pepper, halved lengthwise and seeded; 1 large clove garlic; 1 yellow or orange bell pepper, sliced into 1/4-inch-thick rounds; 1/2 sweet onion, sliced into 1/4-inch-thick rounds; 1/4 cup extra-virgin olive oil; 1/2 baguette, cut into 8 slices; 7 cups cantaloupe chunks; 1/4 cup white balsamic vinegar; Kosher salt and freshly ground pepper; 1/4 cup jarred aïoli or mayonnaise; 2 ounces thinly sliced serrano ham or prosciutto; 1/4 cup chopped fresh parsley