This recipe is compliments of Cook's Country Magazine and I just wanted to make sure I didn't lose it. This is sooooo good and even better leftover the next day. I used spinach as that was what I had on hand. I've found it's more appetizing if you toss in the fresh spinach leaves just before serving letting the heat from the pasta wilt it just a bit. Otherwise, the spinach gets overcooked and turns into clumps. I also like to sprinkle each serving with freshly grated Parmesan cheese.