1. Prepare the sauce by whisking together chicken broth, heavy cream, Italian seasoning, mustard powder, and onion powder. Set aside. 2. Slice sausage into ½-inch pieces. Cook in a skillet with 6 tablespoon water over medium heat for 10 minutes. Brown the sausage, then set aside. 3. Deglaze the skillet with white wine, tomato paste, and garlic. Let it reduce by half. Stir in the prepared sauce and cream cheese. Simmer. 4. Cook rigatoni to al dente. Drain. 5. Stir Parmesan, spinach, and sausage into the sauce. Add pasta and toss to combine. 6. Garnish with parsley and red pepper flakes. Serve warm.