In a large skillet add a bit of the oil with the sliced onions, let them brown, add all the ground meats, stir over low heat. Add the rest of the oil and cook everything until about half cooked.
Add the wine and reduce it a bit, complete the cooking mixing in half a ladle of boiling water; once the meat is cooked thoroughly add parsley and season with salt; cover reduce the heat setting to low and simmer.
Meanwhile, fill a large pot with water; add 1 teaspoon salt and boil the rigatoni until al dente. Drain and put them back to the same pot you boiled them, without the water of course.
Pour over the rigatoni the cup of cream, mix everything gently, making sure the pasta are well coated; heat setting now at low. Mix in the ground meat we did previously, the grated Parmesan cheese, all of the cinnamon and mix.
Serve, fixing each plate with pasta, then sprinkling some more grated Parmesan over and then grind a lot of fresh black pepper on top, and serve while warm.
Accompany this Italian Rigatoni Dish with your favorite Italian red wine.