To the crock pot, add the broth, soup, Worcestershire, and dried ingredients. Stir until combined.
Add the meatballs. Stir until coated.
Cook on high for 2-3 hours, or on low for 4-6 hours, in the 6-quart crock pot, or until the meatballs are heated through and the sauce has come together. If you have a smaller crock pot, it may take 3-4 hours on high or 5-7 hours on low.
Add the heavy cream. Stir until combined.
Taste to see if more salt and pepper are needed.
During the last 10 minutes, make the pasta.
Serve the meatballs with the pasta.
If your sauce is too thin, you can add a cornstarch slurry of 1 teaspoon of water and 1 teaspoon of cornstarch. Mix until combined. Repeat until you reach the desired consistency.
Sprinkle the parsley on top.