Heat a large pot or dutch oven over medium high heat. Once hot, add the sausage and onions. Cook until the meat is thoroughly browned, using a spatula or ground meat chopper to break it into small pieces as it cooks.
1 lb ground spicy Italian sausage, ½ medium yellow onion
Add in the minced garlic, salt, sugar, black pepper, and red pepper flakes. Allow it to cook for 30 seconds, stirring occasionally.
1 tablespoon garlic, 1 teaspoon kosher salt, 1 teaspoon sugar, ½ teaspoon black pepper, ¼ teaspoon red pepper flakes
Add the rigatoni noodles, then pour the crushed tomatoes, petite diced tomatoes, chicken stock and half-n-half in the pot. Give it a good stir, then turn the heat to high and bring it to a boil.
1 lb rigatoni pasta, 1 (28 oz) can crushed tomatoes, 1 (14.5 oz) can petite diced tomatoes, 5 cups chicken broth, ½ cup half-n-half
Once boiling, cover the pot and reduce the heat until the pasta is simmering (for my oven that is low heat, but everyone's burners are a little different). Simmer for 20 minutes, or until the pasta is al dente (tender with just a slight chewiness remaining).
Remove the pasta from the heat and add the fresh basil, stirring well. The sauce may be a bit liquidy, but it will thicken some as it cools. Serve warm with shredded parmesan.
Parmesan cheese, ½ cup fresh basil