Preheat oven to 300°F.
In a large oven-safe pan, add the tomatoes, garlic, onions, fresh oregano, red chili flakes and olive oil. Bake for about 1 hour and 15 minutes until the tomatoes and garlic become tender.
Once the tomato and garlic confit is baked, remove and discard the thyme from the baking dish. Place a mesh strainer over a heat-safe bowl. Then strain the confit. Transfer the tomato and garlic confit to a blender and add 1/4 cup of the confit oil to the blender. Blitz the confit until you get a smooth consistency. Transfer the rest of the confit oil to a glass jar and let it cool before placing the lid. The tomato and garlic confit oil can be used for toast and other pastas.
Bring a large pot of water to a boil and generously season the water with kosher salt. Follow the pasta package instructions for al dente pasta and drain the pasta 2 minutes before the suggested al dente cooking time. Reserve 1 cup of pasta water and set aside.
While the pasta is cooking, add the pasta sauce and cream to a large skillet. Then set the pan over medium heat and cook the sauce for about 2-3 minutes.
Then add the pasta to the pan and reduce the heat to low. Add 1/2 cup of the pasta water and vigorously mix the pasta with the sauce. Add additional pasta water if the sauce needs to be thinned out more. Then turn off the heat and add the parmesan cheese and stir everything together.
Plate the pasta and garnish with additional cheese and red chili flakes (optional). Serve immediately because good pasta waits for no one! Enjoy!