Cauliflower Alla Vodka

Name: Cauliflower Alla Vodka
Ingredients: 1 tbsp. extra-virgin olive oil; 1 onion, chopped; 3 cloves garlic, minced; 0.333 c. vodka; 1 28-oz. can crushed tomatoes; 0.5 c. heavy cream; 1 large head of cauliflower, (about 3 cups) cut into florets, blanched, and drained well; 2 c. shredded mozzarella; 1 c. freshly grated Parmesan