Instructions:

Line a pizza stone or tray (or just an ordinary baking tray) with greaseproof paper.
Pre-heat the oven to 210C/420F/Gas mark 7.

Grate the cauliflower, or process it in a food processor; you are looking to achieve fine crumbs, but do not purée it. If using frozen cauliflower, squeeze excess water out of it and crumble with your hands if possible.

Microwave the cauliflower crumbs for 5 to 6 minutes, or until soft. You can also steam or boil the cauliflower, but you will need to squeeze the excess water out of it afterwards if cooked with water.

Place the cauliflower crumbs in to an large mixing bowl and add the egg, grated mozzarella cheese, Parmesan cheese, herbs, garlic powder, salt and pepper. Mix well, you should have a fairly stiff but a  dough that can be pressed but not break

Place the cauliflower “dough” onto the prepared tray and pat out into a large circle, about 12.5cms (10″) in diameter and about 1.5cms (1/2″) thick. Spray the top with a little low-fat cooking spray and bake for 15 to 20 minutes, or until golden brown and firm.

Spread the tomato puree over the base thinly & place the sliced tomatoes on top, sprinkle the chilli flakes over, scatter over the minced garlic and onion rings, season to taste with salt and pepper, and then arrange the sliced mozzarella cheese over the top.

Bake for 10 minutes or until the topping is bubbling and the cheese has melted. Scatter fresh oregano or basil leaves over and serve cut into wedges with salad leaves.