Step-by-Step Instructions

1. 1.Prepare Ingredients

   Sharpen your knife. Dice one small onion and mince three cloves of garlic. Grate 1/4 cup of Parmesan cheese and set aside.

2. 2.Cook the Pasta

   Bring a pot of salted water to a rolling boil. Add 200g of rigatoni pasta and cook according to package directions until al dente, about 10-12 minutes. Before draining, reserve 1/4 cup of the pasta water.

3. 3.Sauté Aromatics

   While the pasta cooks, place a large pan over medium heat. Add 1 tablespoon of butter and let it melt. Add the diced onion and sauté for 3-4 minutes until translucent. Add the minced garlic and sauté for another 30 seconds until fragrant.

4. 4.Build the Sauce

   Stir in 3 tablespoons of tomato paste and cook for 1-2 minutes, stirring constantly, to deepen its flavor. Pour in 1/2 cup of heavy cream and mix well. Add the 1/4 cup of grated Parmesan cheese and 1/4 cup of reserved pasta water, stirring until the cheese is melted and the sauce is smooth and creamy.

5. 5.Combine Pasta and Sauce

   Add the drained rigatoni pasta directly into the pan with the creamy tomato sauce. Toss thoroughly to ensure all the pasta is evenly coated. Cook for an additional 1-2 minutes, allowing the pasta to absorb the sauce.

6. 6.Serve and Garnish

   Transfer the creamy tomato pasta to a serving bowl. Garnish with additional grated Parmesan cheese, chopped fresh herbs (like parsley or chives), and a sprinkle of freshly ground black pepper.