For the pizza crust
2 cups (280 g) all purpose gluten free flour (Better Batter highly recommended)
1 teaspoon xanthan gum (omit if your blend already contains it)
1/4 cup (36 g) tapioca starch/flour, plus more for sprinkling (See Recipe Notes)
2 teaspoons (6 g) instant yeast (See Recipe Notes)
1 1/2 teaspoons (6 g) granulated sugar
1 teaspoon (6 g) kosher salt
1 cup (8 ounces) warm water (about 95°F)
2 tablespoons (28 g) extra virgin olive oil
For the filling
1 cup (248 g) ricotta cheese
1 egg (50 g, weighed out of shell), beaten
1 ounce grated Parmesan Cheese
6 ounces part skim mozzarella cheese, freshly grated
1/2 teaspoon ground dried oregano
1/8 teaspoon freshly ground black pepper
Egg wash (1 egg + 1 tablespoon water, beaten)
For the tapioca starch/flour
I’ve tested this recipe with superfine sweet white rice flour (also known as glutinous rice flour), gram for gram, in place of tapioca starch/flour. It works quite well.
For the instant yeast
If you only have active dry yeast, you’ll need 25% more yeast. Just multiply the grams of instant yeast called for in the recipe by 1.25.
You’ll have to hydrate the active dry yeast in some of the water in the recipe first. Then, add it to the remaining water and proceed with the recipe as written.
In the bowl of your stand mixer fitted with the paddle attachment or your food processor fitted with the metal blade, place the flour, xanthan gum, tapioca starch, yeast, and sugar, and whisk to combine with a separate, handheld whisk. Add the salt, and whisk again to combine well.
Add the water and olive oil, and mix on medium speed in your stand mixer or pulse in your food processor until the dough begins to come together. Turn the mixer to high speed or your food processor on and process for about 2 minutes. Transfer the dough to an oiled container with a tight-fitting lid or a greased bowl and cover tightly. Refrigerate the dough for at least an hour and up to 3 days.
When you’re ready to make the pizza, place a pizza stone or overturned rimmed baking sheet in the oven and preheat it to 425°F.
In a medium-size bowl, reserving a generous pinch of the grated Parmesan cheese and of the dried oregano, place the filling ingredients and mix well. Set the filling and the reserved ingredients aside.
Remove the dough from the refrigerator, uncover it, and divide it into two equal portions. Work with one at a time, and place the other back in the container and back in the refrigerator.
Sprinkle the dough lightly with tapioca starch, and knead it a bit until it’s smoother. Place the dough on a piece of parchment paper. Sprinkling with more tapioca starch as necessary to prevent sticking, roll the dough into a round about 10-inches in diameter. Keep the dough moving frequently, sprinkling lightly as necessary to prevent sticking. Dust the parchment free of any excess flour.
Place half of the filling ingredients on one half of the 10-inch round of dough in a half-moon shape, leaving a 1-inch clean border along the edge. Lift the clean half of the dough from the edge and carefully place on top of the filling. Pinch the edges to seal, pressing out any air trapped in the pocket. If you’re fancy, crimp or twist the edges like a pie.
Using a pizza cutter or sharp knife, slice three vents in the top of the calzone. Using a pastry brush, coat the top and sides of the shaped calzone liberally with the egg wash. Sprinkle evenly with half of the reserved grated cheese and herbs.
Repeat with the other half of the dough, remaining filling ingredients, egg wash, etc. Using a pizza peel or other large, flat surface, transfer the two calzones to the hot oven (on top of the hot pizza peel or overturned baking sheet). Bake for about 25 minutes, or until puffed and lightly golden brown all over. Remove from the oven, allow to set for a few minutes, then serve hot.
Make-ahead instructions: At this point, you can cool the calzones completely, wrap very tightly in freezer-safe wrap, and freeze for about a month. Defrost mostly at room temperature, unwrap and sprinkle lightly with water, and warm in a 300°F oven before serving. Do not freeze the unbaked yeast dough, as freezing may kill the yeast.