Turn the Instant Pot to saute, and allow the liner to get hot. Add the olive oil, onions, salt, and red pepper flakes. Use a wooden spoon to stir the onions until they begin to soften.
2 tablespoons olive oil, 1 cup white onion, 2 teaspoons kosher salt, 1 teaspoon red pepper flakes
Add the garlic, and cook an additional 30 seconds. Pour in the vodka, and cook until the vodka reduces by half. Turn off the Instant Pot.
6 garlic cloves, 1 cup vodka
Pour in the noodles, and then add the water. There should be enough water to just cover the noodles. If there isn't, add more water until the pasta is covered.
1 pound penne pasta, 3 cups water
Last, pour on the tomato puree. DO NOT STIR!! Close the lid and the set the valve to sealing. Use the manual/pressure cook button, and adjust the time to 6 minutes.
28 ounces tomato puree
After the time is up, open the valve for a quick release. Carefully, remove the lid and stir in the heavy cream.
½ cup heavy cream
Top with your favorite cheese or fresh basil. Serve hot! Store any remaining pasta in the refrigerator for up to 3 days.
Notes
*Calories listed are an approximated and based on the ingredients/servings used. *Please see post for more detailed information about the recipe including cooking tips, best practices, and recipe variations.