Preheat broiler to high heat. Arrange pineapple chunks on a foil-lined sheet, and brush with olive oil and sprinkle with sugar. Mix with your hands, then spread the pieces out into a single layer. Broil until the pineapple has browned and is slightly charred—about 6 minutes each side. Alternately, you can grill the pieces on medium-high heat.

Set pineapple aside and reduce broiler heat to low.

Arrange the baguette slices onto a baking sheet. Brush with butter and place under the broiler for 2 minutes. Remove and sprinkle with Parmesan cheese. Return to the broiler once more for an additional 2 minutes, or until the cheese has browned slightly.

Remove from the oven one piece of rolled prosciutto to each crostini, and then one large basil leaf, and two pieces of pineapple.

Drizzle with golden balsamic glaze. Add a sprinkle of salt and serve warm.