Penne alla Vodka Recipe - Once Upon a Chef

Ingredients

• 3 tablespoons unsalted butter
• ¾ cup finely chopped yellow onion, (from 1 small yellow onion)
• 3 cloves garlic, (minced)
• ½ teaspoon crushed red pepper flakes
• 1 (28-oz) can whole peeled plum tomatoes, chopped, with their juices (see note)
• 2 tablespoons tomato paste
• 1 teaspoon salt
• ½ teaspoon sugar
• ⅓ cup vodka
• 16 oz penne pasta
• ⅔ cup heavy cream
• 3 tablespoons fresh chopped basil, (plus more for serving)
• Finely grated Parmigiano-Reggiano cheese, (for serving)