You can scale this recipe up or down depending on how many crostini you want to make. We find that 1 ball of burrata is enough for 10 crostini and we use half a slice of prosciutto per slice of bread.
Cut the ciabatta into slices and drizzle each side of the bread with olive oil. Heat a griddle pan on a high heat and char-grill or toast the bread on each side then set aside.
Add a light drizzle of olive oil to a pan on a medium heat. Add the slices of prosciutto and fry until crispy and golden, flip over and fry the other side.
Transfer the prosciutto to a plate lined with kitchen paper. The prosciutto will get crispier as it cools.
To assemble the crostini, dollop a little burrata cheese on a slice of ciabatta bread then add a grating of Parmigiano Reggiano on top (we like to use a box grater with the biggest holes for coarsely grated cheese).
Add a sprinkle of freshly ground black pepper then top with a piece of crispy prosciutto (half a slice should be enough). Repeat with the remaining crostini and serve.