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Bring a large pot of heavily salted water to a rolling boil. Add the rigatoni and cook according to package directions until al dente. Reserve 1 cup of the pasta cooking water before draining the pasta.

While the pasta is cooking, heat the olive oil in a large skillet or Dutch oven over medium heat. Add the diced yellow onion and cook, stirring occasionally, until softened and translucent, about 5-7 minutes.

Add the minced garlic and red pepper flakes to the skillet. Cook for 1 minute more, until fragrant, being careful not to burn the garlic.

Pour in the crushed tomatoes, 1 teaspoon of kosher salt, and 1/4 teaspoon of black pepper. Bring the sauce to a gentle simmer, then reduce the heat to low, cover, and let it cook for 10 minutes, allowing the flavors to meld.

Stir in the heavy cream and grated Parmesan cheese until well combined. Add the fresh spinach, a handful at a time, allowing it to wilt down before adding more. Continue stirring until all the spinach has wilted into the sauce.

Add the cooked and drained rigatoni to the sauce. Toss to coat the pasta evenly. If the sauce seems too thick, add some of the reserved pasta cooking water, 1/4 cup at a time, until it reaches your desired consistency.

Taste and adjust seasoning with more salt and pepper if needed. Serve immediately, garnished with additional grated Parmesan cheese.


Bring a large pot of heavily salted water to a rolling boil. Add the rigatoni and cook according to package directions until al dente. Reserve 1 cup of the pasta cooking water before draining the pasta.

While the pasta is cooking, heat the olive oil in a large skillet or Dutch oven over medium heat. Add the diced yellow onion and cook, stirring occasionally, until softened and translucent, about 5-7 minutes.

Add the minced garlic and red pepper flakes to the skillet. Cook for 1 minute more, until fragrant, being careful not to burn the garlic.

Pour in the crushed tomatoes, 1 teaspoon of kosher salt, and 1/4 teaspoon of black pepper. Bring the sauce to a gentle simmer, then reduce the heat to low, cover, and let it cook for 10 minutes, allowing the flavors to meld.

Stir in the heavy cream and grated Parmesan cheese until well combined. Add the fresh spinach, a handful at a time, allowing it to wilt down before adding more. Continue stirring until all the spinach has wilted into the sauce.

Add the cooked and drained rigatoni to the sauce. Toss to coat the pasta evenly. If the sauce seems too thick, add some of the reserved pasta cooking water, 1/4 cup at a time, until it reaches your desired consistency.

Taste and adjust seasoning with more salt and pepper if needed. Serve immediately, garnished with additional grated Parmesan cheese.
