Preheat the oven to 180 degrees C. Line a baking tray with baking paper.
Lay two tortillas side by side on the prepared baking tray. Spread with 4 tablespoons of sauce each. Sprinkle each with equal amounts of the grated mozzarella and diced prosciutto. Lay the remaining two tortillas on top of each prepared tortilla.
Bake in the preheated oven for 10 minutes or until the cheese is melted and the tortillas golden brown. Cut into quarters and serve.