Choose your crust: Matzo, tortilla, or cauliflower.
Make the Matzo or Tortilla Pizza: Preheat the oven to 400°F. Choose your base and top it with any sauce, vegetables, and meats of your choice. Place pizza on a baking sheet lined with parchment paper. Bake in the oven for 10-12 minutes. **
Make the Cauliflower Crust: Preheat the oven to 400°F. Line a baking sheet with a clean kitchen towel. Bring ½-inch of water to a boil over high heat in a wide skillet with a lid. Grate the cauliflower on the large holes of a box grater, then add to the boiling water, spread out evenly, cover, reduce heat to medium, and steam the cauliflower for 5 minutes. (You can also steam in a regular pot or in a glass bowl in the microwave.)
Drain any water from the cauliflower, dump it onto the towel, spread it out, and let it cool slightly. Gather the towel around the cauliflower, making sure it is secure, and squeeze out as much extra liquid as you can.
Dump the cauliflower into a bowl and add the mozzarella, egg, salt, garlic powder, onion powder, and pepper. Line the baking sheet with parchment and use your hands to spread the “dough” into a 10-inch circle. Bake until golden and the edges are browned, 20 minutes. Top with your favorite sauce and pizza toppings and return to oven for 10-12 minutes.