• Make the pizza dough and allow it to rise 1x double volume. While the dough is rising make the filling.

Filling

• Using a very sharp knife, slice the partially frozen steak across the grain into paper thin slices.
• Heat 2 tablespoons olive oil in a saute pan. Saute 1 medium onion with a generous pinch of salt until they are soft and lightly browned. Remove the onions from the pan and set aside. Saute 6 oz white mushrooms in the same pan with a generous pinch of salt and black pepper to taste. Allow the mushrooms to release all their liquid and cook until the liquid is gone and the mushrooms begin to brown. Remove the mushrooms from the pan and set aside.
• Add a little more olive oil to the pan and saute the steak slices with salt and pepper to taste. Cook the steak in 2 batches if necessary to avoid crowding the pan. Use 2 spatulas to separate the pieces of steak and to break up larger pieces. Remove the steak from the pan and set aside to cool.
• Divide the pizza dough into 6 equal portions and form each portion into a smooth ball. Cover the dough balls with a damp towel or plastic wrap and allow to rest for 10 minutes. Preheat the oven to 450 °F °F.
• Using a rolling pin, roll each dough ball into an 8" round, leave the center of the rounds a little thicker than the edges. Brush the entire perimeter of the round with egg wash. Place a slice of provolone on each dough round. Divide the onions, mushrooms and steak evenly between the 6 rounds Add another slice of provolone on top of the filling.
• Fold the dough over the filling. Bring the top edge of the dough 1/2" short of the bottom edge. Use your fingers to pull the bottom edge of the dough over the top edge of the dough and pinch to form a tight seal.
• Place the calzones on a parchment lined 1/2 sheet pan. You should fit 3-4 per pan. Brush each calzone with egg wash and sprinkle the top with a little coarse sea salt Use a sharp knife to make a steam vent on the top of each calzone. Bake until they are golden brown and puffed.
• Serve with your favorite marinara sauce or ketchup.