Shepherd's Pasta, version 2: Ziti al Pastora
Place the sausage in a frying pan, add 1/4 cup water, cover and cook over medium-high heat 6 minutes. Remove the lid and cook for an additional 15 minutes, until the water evaporates and the sausage is browned. Pour off any excess fat.
Meanwhile, add the ricotta to the sausages and mix in the pepper flakes and salt and pepper, to taste. Drain the cooked pasta, reserving the cooking liquid, and stir it in to the sausage/ricotta mixture.