Prepare your pasta as indicated in the package instruction.
While this is happening, start with the spicy Italian sausage sauce by heating oil on a large skillet over medium-high heat.
Once the oil is ready, add the Italian sausage ground meat (i.e., without the casings).
Cook for about 7 to 8 minutes, frequently mixing to make sure nothing sticks at the bottom.
Add the minced garlic and continue mixing for 2 more minutes.
Add the tomato sauce, salt, pepper, and dried parsley.
Mix, cover with a lid, and bring to a boil.
Adjust the heat to medium-low and let the sauce simmer for at least 15 minutes.
Pour the cream, mix, and place the lid back on.
Bring to a quick boil, then adjust the heat back to medium-low and let it simmer for 2 minutes.
Uncover the pan and add the cooked pasta.
Mix to coat the pasta evenly, then take the pan off the heat.
Transfer creamy Italian sausage pasta into plates.
Serve, and garnish with some fresh parsley or freshly grated Parmigiano, if preferred.