One 26-ounce package frozen meatballs, thawed
8 ounces wide egg noodles (or any other pasta of choice)
2 tablespoons unsalted butter
¼ cup all-purpose flour
½ cup finely diced onion
1 cup thinly sliced button mushrooms
2 ½ cups beef broth
2 tablespoons Worcestershire sauce
½ cup sour cream
½ cup heavy cream
Salt and pepper to taste