Set oven at 180°C
Place the TVP and Stock into a bowl and set aside for 10 mins.
Roughly chop up your Whole Cauliflower
Blanche for 5 mins in boiling water and then drain.
In a large saucepan on medium-high place your olive oil and onion. Fry off until translucent.
Add the TVP and Taco seasoning. Mix and continue frying off.
Add in the Cauliflower and mix.
Transfer to a large oven proof dish.
Add all the ingredients into a blender and blitz until well combined.
Pour into a saucepan and stir until the bottom starts to thicken. You should be able to see the bottom of the pan when stirring, without the liquid covering immediately. (approx 3-4 mins on medium)
Pour the Cheezy sauce over the taco mix and smooth out so the entire top is covered.
Place in the already heated oven for 20-25 mins