Penne with Spinach and Ricotta

When making tortelloni filled with spinach and ricotta, I sometimes ended up with leftover filling. It occurred to me that it would make a very nice pasta sauce, so I added a little cream to the mixture and it was delicious—so much so that I’ve been making it just to use as a pasta sauce. If you use packaged baby spinach, it is also very quick and simple to prepare.