Preheat your oven to 425 degrees f. and line a 12-inch round pizza baking tray with parchment paper.
Place your cauliflower florets into a food processor and pulse until it resembles a fine meal. Transfer to a large bowl.
Add in the mozzarella, Parmesan, eggs, oregano, sea salt, and pepper. Stir thoroughly to combine.
Place the cauliflower mixture onto the prepared baking tray and form into a ½-inch-thick circle. Make sure the edges are not thinner than the center or they may brown too fast.
Bake your crust at 425 degrees f. for 20-25 minutes, or until the edges are golden.
Once done, remove from the oven and layer your marinara sauce over the crust.
Top with shredded mozzarella. Return to your preheated oven and bake for an additional 10 minutes, or until the cheese is melted.
Remove from the oven and top with prosciutto, cherry tomatoes, and fresh arugula.
Sprinkle with freshly cracked black pepper and lightly drizzle with a bit of balsamic.
Enjoy!