Cheesy Cauliflower Casserole

Name: Cheesy Cauliflower Casserole
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: American
Ingredients: 2 heads cauliflower, cut into florets; 5 eggs; 1 ½ cups heavy cream; 1 1/2 teaspoons salt; ½ teaspoon pepper; 1 teaspoon garlic powder; 1 teaspoon onion powder; 4 tablespoons butter, melted; 2 cups shredded white cheddar cheese; 1/2 cup grated parmesan cheese; ½ cup shredded mozzarella cheese; Additional ½ cup grated parmesan for topping