Divide the pizza dough into equal portions and roll each portion into a circle on a lightly floured surface.
Spread pizza sauce over one half of each dough circle, leaving space around the edges.
Top with ricotta cheese, mozzarella cheese, Parmesan cheese, and pepperoni.
Fold the dough over the filling to form a half-moon shape. Press the edges together and crimp with a fork to seal.
Place the calzones on a baking sheet lined with parchment paper.
Cut a few small slits in the top of each calzone to allow steam to escape.
Brush the tops with the egg wash and sprinkle with Italian seasoning.
Bake for 12–15 minutes, until golden brown.
Let cool slightly, then serve warm with pizza sauce for dipping.
Video
Notes
If you use pizza dough that comes in the sheet form, use a sharp knife to cut out the circles instead of rolling it out again. Make sure that the edges are sealed tightly. The water helps form a tight seal to prevent it from coming apart while cooking it. These are best served fresh but the leftovers can be stored for up to 5 days as long as they are refrigerated in an airtight container.I recommend reheating them in the oven to make the outside crispy again.