Note
1. Fire up your Ooni pizza oven and aim for 400°C to 450°C on the baking stone.
2. Preheat your cast iron skillet pan in the oven for 4 minutes to sauté the spinach (this can also be done on the hob).
3. Use oven gloves to carefully remove the pan, then add the olive oil and crushed garlic.
4. Remove the pan from the oven then add the spinach and a pinch of salt and carefully mix with a wooden spoon to coat until the spinach is fully coated with the olive oil.
5. Dust a work surface with semolina flour and begin stretching one of your dough balls out to a 12-inch or 14-inch round base, pushing the air from the center out to the edge.
6. Lay the stretched dough over a lightly-floured pizza peel, then lightly and evenly drizzle or brush the middle of the dough with olive oil.
7. Place the sliced provolone evenly over the pizza, then add the mozzarella and tiny dollops of ricotta, then finish off by topping it with the garlic-sautéed spinach.
8. Use your pizza peel to slide the pizza into the oven and cook for 60 to 90 seconds.
9. Remove from the oven when the crust is lightly browned or showing signs of leoparding around the edges and the cheese is melted.
10. Finally, sprinkle your freshly grated Pecorino Romano cheese over the top, then slice, serve and enjoy! .