Absolutely. I don't usually include cinnamon when I cook it, as I use the sauce for many different recipes, but for dessert or breakfast, cinnamon applesauce is delicious. For this quantity of apples, add a tablespoon of cinnamon, or ideally use a cinnamon stick. Spices such as ginger, allspice, nutmeg and cardamom will also go perfectly with the flavour of apple.