Preheat the oven to 450-500°F (230°C-260°C) and line a baking pan with baking paper.
Cut the cauliflower into florets and, using a blender or food processor, process to get a rice-resembling consistency.
Bring a pot of salted water to a boil and blanch the cauliflower for 1-2 minutes. Place in a cheesecloth or kitchen towel and squeeze out all the liquids. It’s important to squeeze out as many liquids as possible.
Mix with the egg, ¼ cup mozzarella cheese, parmesan, and oregano. Knead to make dough.
Spread the dough on the lined baking pan and shape it into a circle (or any shape you prefer).
Bake in the preheated oven for 10 minutes, until slightly golden.