I never had a calzone until I went to college. There was a restaurant called Pero's that was near the school that delivered. That branch closed and now I make my own. Actually, I made the dough and assembled the ingredients and yohboh made them.
It basically is my pizza dough with a ricotta filling. Bake at 550 until they are golden, brown and delicious. Then I brushed them with garlic infused oil and kosher salt right out of the oven.