Preheat the oven to Gas 5 180°C/160 fan.
Use a food processor to blend the cauliflower until it's very fine
Place in a microwavable bowl, cover with clingfilm and heat in a microwave for 5 minutes
In a separate bowl beat the 2 eggs, add the oregano and any salt and pepper if you wish
Mix the egg mixture into the cauliflower
Line your baking tray with grease proof paper and spay with low-calorie cooking spray
Tip the cauliflower mixture onto the grease proof paper and spread out to form your base, using your fingers is easiest. You want it around 1cm thick
Place in the centre of your oven for 15 minutes
Move to the top shelf for another 15 minutes to fully harden the base
Remove tray from the oven and using a palette knife ease the base from the paper. Next is the tricky bit as your going to flip the base over. We found it easiest to place another tray with greaseproof paper on over the top and tip the whole thing over.
Once you have it flipped return to the over for another 10-15 mins until t is golden brown
Now the fun bit! spread with tomato puree, add your toppings and sprinkle with cheese
Pop it back in for a last 10-15 mins until the cheese is melted and your done
Remove from oven, slice and enjoy with a nice big side salad