Step 1

Preheat oven to 375 degrees Fahrenheit. Line a shallow baking pan with foil. Lightly coat foil with cooking spray; set aside. In a large bowl combine the bread crumbs, egg product, milk, onion, 1/4 cup parsley, 1/4 teaspoon salt and pepper. Mix well. Add ground pork and ground turkey; mix well. Shape mixture into 18 meatballs (mixture will be soft). Place meatballs in the prepared baking pan. Bake 10 minutes (meatballs will not be done in the center at this point).

Step 2

In a 2-quart slow cooker, combine the beef broth, 1/2 teaspoon salt, dry mustard, nutmeg and allspice. Add the meatballs. Cover and cook on low-heat setting for 6 hours or on high-heat setting for 3 hours.

Step 3

If using low-heat setting turn to high-heat setting. In a small bowl stir together the sour cream and flour. Whisk 1 cup of hot broth into sour cream mixture until smooth. Gently stir sour cream mixture into the slow cooker until combined. Cover and cook 30 minutes.

Step 4

Prepare pasta according to package directions for al dente doneness; drain. Transfer pasta to a large serving bowl. Pour meatballs and sauce over pasta. Let stand, covered, for 10 minutes to thicken. If desired, sprinkle with additional parsley.