Line a rimmed baking sheet with parchment paper. Arrange desired amount of prosciutto in a single layer on parchment. Top with another sheet of parchment. Place another rimmed baking sheet on top.
Bake until crisp, about 15 minutes. Remove top baking sheet and top sheet of parchment. Let prosciutto stand until cooled. Coarsely chop.
Recipe by Victoria at https://victoriamag.com/mini-avocado-toasts/