1. Prepare your dough ahead of time.
2. Fire up your Ooni Pizza Oven.
3. Cook, stirring regularly, for 15 to 20 minutes, (or until the onions are soft and just beginning to caramelise at their edges).
4. Lightly dust your peel with flour or semolina.
5. Evenly scatter half the tender onions on the dough.
6. Portion half the cheese then tear off and scatter fingertip-sized pieces evenly on the dough.
7. Check that the temperature on the stone is between 400 to 450˚C (752°F to 842˚F).
8. Remove the pizza to a cutting board, and trickle over a little more olive oil.
9. Repeat for the remaining pizza and serve.