Pre-heat your broiler.
Give the cauliflower a quick spin in your food processor fitted with the large chopping blade just until it is minced. You’ll need 1 1/2 cup.
In a large bowl, combine meat, minced cauliflower, 1/3 cup of parmesan, 6 ounces of mozzarella, onion, garlic, oregano, salt, and pepper.
Whisk eggs in a small bowl. Then add to the meat mixture. Gently mix with your hands until evenly combined.
Now you’re ready to roll each meatball. Not too tight. You want to lightly roll them between your hands to form a ball that feels like it will hold together, but lightly so they will absorb the sauce.
Then broil the meatballs for 10 minutes, turning them over half way through your cooking time.
Take the meatballs out of the broiler and pre-heat your oven to 350℉.
Spoon a thin layer of sauce over the bottom of your casserole dish.
Place meatballs on top of the sauce.
Top meatballs with 1 cup of sauce. Sprinkle with 1/4 cup of parmesan and 8-12 ounces of mozzarella.
Bake for 15 minutes until the cheese melts. Serve and enjoy.