Ingredients
Method
- Heat the olive oil and butter in a large pot over medium heat. Once the butter stops foaming, add the onion and a pinch of salt. Cook for 5 to 6 minutes, stirring now and then, until it's soft and translucent but not brown.
- Add the garlic and cook for 30 seconds, just until it smells fragrant. Don't walk away here, because burnt garlic tastes bitter and you can't fix it.
- Stir in the chopped peppers, tomato paste, smoked paprika and red pepper flakes. Cook for 2 minutes, pressing the tomato paste against the bottom of the pot. It should darken a shade and start to stick a little. That's flavor.
- Pour in the broth and scrape up anything stuck to the bottom. Turn the heat up to medium-high and bring it to a boil.
- Add the pasta, stir well, and push it down so most of it is under the liquid. Lower the heat to a steady simmer, cover with the lid slightly cracked, and cook for 12 to 14 minutes. Stir every 3 minutes or so. Pasta in a small amount of liquid likes to clump and stick to the bottom.
- Check the pasta about 2 minutes before the package time. It should be just tender, and most of the broth should be absorbed, leaving a loose sauce. If it looks dry and the pasta isn't done yet, add 1/4 cup more broth or water.
- Turn the heat to low. Stir in the cream, then the Parmesan a handful at a time, stirring until each handful melts before adding the next.
- Season with salt and black pepper. Let it sit off the heat for 2 minutes, since the sauce thickens as it rests. Top with basil and extra Parmesan.
Notes
Use a wide pot or Dutch oven that holds at least 5 quarts. Chop the peppers to about pea size and pat them dry after draining, because the jar brine can make the sauce sour. For a smooth sauce, use an immersion blender before adding the pasta. Use low-sodium broth, since the liquid reduces and Parmesan is salty. Pick a short pasta shape that cooks in 10 to 12 minutes. Grate the Parmesan from a block and add it over low heat, never at a boil. If the sauce is too thin, simmer it uncovered for 1 to 2 more minutes before adding the cream, then let it rest. Refrigerate leftovers in an airtight container within two hours. They keep for 3 to 4 days. Reheat with a splash of milk or broth. Freezing isn't recommended.
