This is the basic recipe for cheese calzones. You can add whatever you'd like, just like with pizza. Warm up some marinara sauce and serve it on the side for dipping.
Preheat oven to 400.
Mix together filling ingredients.
Cut each ball of dough into fourths. Roll each piece into a circle about the size of a dinner plate.
Put a 1/2 cup or so of filling into the middle of each circle of dough circle. (You can add other things in at this point - pepperoni, olives, etc. - if you haven't already added them to the filling) Fold the dough circle in half and pinch the edges together tightly to make a wedge-shaped calzone.
Press lightly on the calzone to squeeze the cheese down to the ends.
Mix the egg yolks up with a little water and brush the egg wash over the top of the calzones.
Grease and flour a large pan (or use corn meal or bread crumbs instead of flour). Lay the calzones on the pan, leaving some room for them to expand a bit.
Bake about 18 minutes, until the tops are golden brown. Serve with hot marinara sauce for dipping.