Sometimes ravioli making just doesn't work out. You try mark and cut them out, and they don't seal correctly and you end up with a sticky mess. Then there are the bits and pieces of partial raviolis that need a home. Here's the save: combine the leftovers and knead into a ball, adding more flour as necessary to make a workable dough. Roll out into a large, thin sheet and cut into strips with a knife or pastry cutter. Now you have spinach pasta! Serve with your sauce of choice topped with grated Parmesan cheese.