Method

1. Preheat oven to 450°F (220°C) and place a rack in the middle.
2. Line a baking sheet with parchment paper and grease liberally with olive oil.
3. In a food processor rice the cauliflower florets in batches (process until evenly chopped but not pulverized).
4. Transfer cauliflower rice to a microwave dish and microwave on high for 8 minutes, until cooked.
5. Place the cauliflower rice in a tea towel and twist it to squeeze out as much moisture as you can (I squeezed out more than 1 cup of liquid).
6. This is very important. The cauliflower rice needs to be dry.
7. Otherwise you’ll end up with a mushy dough, not a crusty one.
8. Transfer the cauliflower rice to a mixing bowl and add egg, cheese, oregano, sea salt and pepper.
9. Mix well.Using your hands, press the mixture onto the baking sheet and shape into three discs (diameter should be about 5 inches).
10. Place in the oven and bake for 10 (no more no less, 10 minutes).
11. Remove from the oven and, working quickly, top the half of each disc with tomato sauce and cheese.
12. Using a large spatula carefully lift the half of the disc without filling and fold it over the other part (that’s ok if the disc brakes a bit).
13. Use your fingers to push the edges of each calzone together and seal in the filling.Bake in the oven for an additional 12 minutes.