If you like, use one ten-ounce package of defrosted frozen chopped spinach instead of the fresh. Drain it and squeeze out any remaining moisture. Simmer the spinach in the tomato sauce just to warm it through.
Here's another opportunity to try an unusual wine: Saumur-Champigny, a vibrant, fruity red from the Loire Valley of France. Made from Cabernet Franc, it has a wonderful strawberry aroma and enough tannin to stand up to the cheese.