Arrange sliced peaches on a serving platter and refrigerate while mixing the Mascarpone cheese.
Spoon Mascarpone cheese into a small mixing bowl.
Add honey and stir to combine.
Cut the passionfruit in half (use a chopping board and a serrated knife – it works best).
Squeeze the pulp from one whole passionfruit into the Mascarpone cheese mixture and stir to combine.
Optional: (can use two spoons instead) spoon Mascarpone cheese mixture into a pastry bag or a gallon-size plastic food storage bag (see “tip” in this post).
Remove peaches from refrigerator and dollop Mascarpone cheese over peaches in several places using pastry bag or food storage bag or two spoons.
Drizzle with remaining passionfruit pulp by squeezing passionfruit over peaches.
Serve immediately or cover with plastic wrap and store in the refrigerator up to 2 hours, until ready to serve.