This recipe is endlessly adaptable: You can use pancetta or even sliced salami in place of the bacon, and chopped cabbage or torn escarole work well if you don't have sprouts. No shallots? A small red...
If you want to get the timing just right on this one - no wasted time! - start the sauce a few minutes after you've dropped the pasta into the boiling water. Your spinach should be wilted right around...