Prep:
- Prepare the shrimp: Thaw the frozen shrimp and rinse thoroughly. Pat-dry and set aside.
- Prepare the rest of the ingredients: Chop the red onion, garlic, fresh red chilies and slice the basil. Measure out the milk in a measuring cup and grate the Parmigiano Reggiano cheese using a box grater.
Spicy Nduja Pasta with Shrimp:
- Cook the orecchiette: Cook the pasta 1 minute shy of al-dente according to package instructions in a large pot of boiling salted water. (Or use the same deep large skillet you’ll use to make the pasta dish). Reserve ½ cup of pasta cooking water, then drain and set aside. (I like to run cold water over the pasta to prevent it from sticking and cooking further but this is optional.)
- Cook the shrimp: Heat 1 tablespoon of unsalted butter in a large deep edged skillet or sauté pan over medium-high heat. Add the shrimp and spread the pieces out in the pan. Season with a little salt and pepper. Allow to sear for 1 minute, then flip and season the other side with a little more salt and pepper. Sear for another 1-2 minutes or until just cooked. Transfer to a clean bowl, leaving most of the unsalted butter behind in the pan.
- Sauté the aromatics: In the same large pan, add the red onion and sauté for 1 minute until starting to soften. Then add the garlic and red chilies and sauté to combine for another 30 seconds until fragrant.
- Add the nduja and tomato paste: Add the nduja and double concentrated tomato paste. Sauté and cook for 2-3 minutes, until the mixture is shimmering and the fat from the nduja has melted.
- Make the cream sauce: Add the all-purpose flour and whisk to combine for a minute to get rid of the floury taste. Reduce the heat to low and gradually pour in the milk while continuing to whisk.
- Stir in the seasonings: Stir in the kosher salt, black pepper, smoked paprika, crushed red pepper flakes, dried rosemary, and dried thyme.
- Add the cheese: Stir in the freshly grated Parmigiano Reggiano cheese and mix until fully melted. Let it simmer for a minute or two until the sauce starts to thicken.
- Mix in the baby spinach: Add the baby spinach and mix just starting to wilt – 30 seconds.
- Add the pasta and shrimp: Add the cooked orecchiette and seared shrimp back into the pan. Mix until combined well and everything is evenly coated in the sauce. If the sauce thickens too much, add another tablespoon or two of reserved pasta water and mix until it coats the pasta evenly.
- Stir through the basil: Stir through the basil and switch off the heat.
- Serve: Divide evenly onto plates and garnish with fresh basil and more grated cheese if desired. Serve immediately.