Spinach-Parmesan stuffing provides great flavor in boneless, skinless chicken thighs. Try it with the optional chicken livers in the stuffing for an extra-rich treat. And don't worry, even though when stuffed it looks like the filling will ooze out, it doesn't. The egg in the stuffing acts as a binder to keep everything in place. The recipe makes plenty of sauce, so be sure to cook up some pasta or make mashed potatoes to serve alongside the saucy chicken. Download a FREE Cookbook with Our Best Chicken Recipes!