1 Preheat oven to 350 degrees F (175 degrees C). Lightly grease a large baking dish. 2  In a bowl, mix the ricotta cheese, walnuts, Parmesan cheese, bread crumbs, and oregano. 3  Loosen the skin on the chicken breasts to form a pocket, and stuff with the ricotta cheese mixture. Arrange the chicken breasts in a single layer in the prepared baking dish, and brush with oil. Bake 45 minutes in the preheated oven, or until the chicken is no longer pink and juices run clear. You might also like