If you don't have cinnamon but you have apple pie spice mix, that works just as well, since cinnamon is a main ingredient. Another great option is to use pumpkin spice mix, which also has cinnamon. If you don't like cinnamon at all, then I recommend substituting it for a mix of ginger and cloves, or just ginger. This will give it a similar earthy and fragrant quality, while bringing a spicy kick that you won't get from cinnamon. Mix equal amounts of ginger and cloves, and in total use just half of the amount stated for cinnamon. If using just ginger, use 1/4 of the amount stated for cinnamon - or add more for a spicier dish. Finally, you can also substitute it for ground cardamom in the same amount.