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

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

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

Pour in the crushed tomatoes. Bring the sauce to a gentle simmer, then reduce the heat to low, cover, and let it cook for 10-15 minutes, allowing the flavors to meld.

Stir in the heavy cream and grated Parmesan cheese until well combined and the cheese has melted. Season with salt and black pepper to taste.

Add the fresh spinach to the sauce, stirring until it wilts completely, which should only take 1-2 minutes.

Add the drained pasta to the sauce. Toss to coat evenly. If the sauce is too thick, add a splash of the reserved pasta water until it reaches your desired consistency.

Serve immediately, garnished with fresh chopped basil and extra grated Parmesan cheese, if desired.


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

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

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

Pour in the crushed tomatoes. Bring the sauce to a gentle simmer, then reduce the heat to low, cover, and let it cook for 10-15 minutes, allowing the flavors to meld.

Stir in the heavy cream and grated Parmesan cheese until well combined and the cheese has melted. Season with salt and black pepper to taste.

Add the fresh spinach to the sauce, stirring until it wilts completely, which should only take 1-2 minutes.

Add the drained pasta to the sauce. Toss to coat evenly. If the sauce is too thick, add a splash of the reserved pasta water until it reaches your desired consistency.

Serve immediately, garnished with fresh chopped basil and extra grated Parmesan cheese, if desired.
