Preheat the oven to 177 ˚C. Line a baking sheet with parchment paper.
Wash and cut each peach into 6 equal slices.
Cut the baguette into twelve slices, 2.5 cm thick each. Brush each side of the slices with olive oil. Place the slices on the lined baking sheet and bake for 12-15 minutes or until lightly toasted.
Assemble the toasts on a serving tray. Top each toast with a small handful of arugula, then a slice of prosciutto, and finally a slice of peach. Top each appetizer with a drizzle of balsamic glaze just before serving.