Ingredients
Method
Method
- Bring a 5- to 6-quart pot of water to a rolling boil. Add 1 tablespoon fine salt.
- Add the rigatoni and cook according to package directions until al dente, usually 10 to 12 minutes.
- Before draining, scoop out 1 cup (240 ml) of the starchy pasta cooking water. Drain the rigatoni without rinsing.
- While the pasta cooks, heat the olive oil in a 12-inch deep skillet over medium heat. Add the onion and cook for 4 to 5 minutes, stirring occasionally, until softened and translucent.
- Stir in the garlic and crushed red pepper flakes. Cook for about 30 seconds, until fragrant. The garlic should remain pale rather than deeply browned.
- Add the tomato paste and cook for 2 minutes, stirring frequently. It should darken slightly from bright red to a deeper brick-red color.
- Stir in the crushed tomatoes, oregano, 1/2 teaspoon salt, and black pepper. Scrape the bottom of the skillet to incorporate any browned tomato paste.
- Reduce the heat to medium-low and simmer uncovered for 6 to 8 minutes, stirring occasionally. The sauce should thicken slightly and lose its raw tomato aroma.
- Reduce the heat to low and stir in the heavy cream. The sauce should turn a smooth reddish-orange color.
- Stir in the 1 cup (90 g) Parmesan gradually until melted. Keep the heat low and do not allow the sauce to boil.
- Stir in 1/2 cup (120 ml) of the reserved pasta water. The sauce should look creamy and fluid enough to coat the rigatoni.
- Transfer the drained rigatoni to the skillet: Toss over low heat for 1 to 2 minutes until every piece is evenly coated.
- Add more reserved pasta water a few tablespoons at a time if the sauce becomes too thick. It should cling to the pasta without looking dry or watery.
- Remove the skillet from the heat and stir in the lemon juice. Taste and adjust the chile level or salt only if needed.
- Let the pasta stand for 5 minutes. The sauce will thicken slightly and settle into the ridges of the rigatoni.
- Divide among six bowls and garnish with basil or parsley, extra Parmesan, and additional red pepper flakes if desired.
