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Bring a large pot of salted water to a rolling boil. Add the spaghetti and cook according to package directions until al dente. Before draining, reserve 1 cup of the pasta water.

While the spaghetti is cooking, heat the olive oil and butter in a large skillet or pan over medium heat. Add the chopped onion and sauté for 3-5 minutes, until softened and translucent.

Add the minced garlic to the skillet and sauté for another 1 minute until fragrant, being careful not to burn it.

Stir in the tomato purée, tomato paste, reserved pasta water, salt, black pepper, and chili flakes. Bring the sauce to a gentle simmer and cook for 5-7 minutes, stirring occasionally, until it has slightly thickened.

Reduce the heat to low and stir in the heavy cream and 1/2 cup of grated Parmesan cheese until well combined and the cheese has melted, creating a silky sauce.

Add the cooked and drained spaghetti directly into the pan with the sauce. Toss continuously for 1-2 minutes, ensuring every strand of spaghetti is evenly coated in the creamy tomato garlic sauce.

Serve immediately, garnished with additional grated Parmesan cheese.


Bring a large pot of salted water to a rolling boil. Add the spaghetti and cook according to package directions until al dente. Before draining, reserve 1 cup of the pasta water.

While the spaghetti is cooking, heat the olive oil and butter in a large skillet or pan over medium heat. Add the chopped onion and sauté for 3-5 minutes, until softened and translucent.

Add the minced garlic to the skillet and sauté for another 1 minute until fragrant, being careful not to burn it.

Stir in the tomato purée, tomato paste, reserved pasta water, salt, black pepper, and chili flakes. Bring the sauce to a gentle simmer and cook for 5-7 minutes, stirring occasionally, until it has slightly thickened.

Reduce the heat to low and stir in the heavy cream and 1/2 cup of grated Parmesan cheese until well combined and the cheese has melted, creating a silky sauce.

Add the cooked and drained spaghetti directly into the pan with the sauce. Toss continuously for 1-2 minutes, ensuring every strand of spaghetti is evenly coated in the creamy tomato garlic sauce.

Serve immediately, garnished with additional grated Parmesan cheese.
