To assemble pizza, spread leek sauce ( amount to preference) over half baked crust. Top with mozzarella, then arugula, onion, mushrooms, and cauliflower, finishing with parmesan cheese. Finish with drizzle of olive oil and sea salt and place back in oven at 450 for 15-18 minutes or until the entire pizza and crust is lightly browned and the cheese is sizzling in the center. Enjoy!