Creamy Penne alla Vodka: My Weeknight Italian Secret!

Ingredients

• 2 tablespoons olive oil
• 1 small yellow onion, finely chopped
• 2 cloves garlic, minced
• 1 (28 ounce) can crushed tomatoes
• 1/2 cup heavy cream
• 1/4 cup vodka
• 1 teaspoon dried oregano
• 1/2 teaspoon red pepper flakes (optional)
• Salt and freshly ground black pepper to taste
• 1/4 cup grated Parmesan cheese, plus more for serving
• 2 tablespoons chopped fresh basil, for garnish
• 1 pound penne pasta
• Salt for pasta water