Can I use fresh tomatoes instead of freeze-dried tomato powder?
Yes. Use 1/2 cup tomato paste mixed with 1/2 cup water, or 1 cup crushed fresh tomatoes, reducing the chicken broth to 1/2 cup to maintain sauce consistency.
What type of sausage works best?
Italian sausage (mild or hot) is traditional. Ground sausage, chorizo, or kielbasa also work well; adjust seasoning to taste.
Can I make this ahead?
Yes. Prepare the sauce and sausage mixture up to 2 days ahead; store separately from cooked pasta. Reheat gently on the stovetop, tossing with fresh or reheated pasta.
Can I use frozen spinach instead of fresh?
Yes. Use 1 cup frozen spinach, thawed and squeezed dry, to prevent excess water in the sauce.
How do I avoid a broken or curdled cream sauce?
Add cream off heat or over low heat at the very end. Never boil after adding cream. Stir in freeze-dried tomato powder before the broth to bloom flavors.