Here is my recipe which is quite simple for you all! This recipe I use even when im preparing for a contest. I have a sweet tooth and this is one of my favorite things to make at home! I LOVE THESE! 
1-2 large sweet potatos
Cinnamon
pumpkin spice
olive oil
cooking spray
First peel the sweet potatoes and slice into fries. This is the time consuming part but once this is done its easy from here. Another trick is to heat in the microwave for a minute or so to soften it, then it is easier to cut up. Once you have them sliced up you get a large bowl and mix in a few tablespoons of olive oil. I personally never use the olive oil unless im off season or its a special occasion. They are just as good without it and it saves calories.
Next, sprinkle in cinnamon and pumpkin spice. Line baking sheets with foil and spray with pam to prevent them from sticking.
Thats it! bake at 425 for about 30min. Turn them every 10min.
I will top them with Walden farms sugar free/calorie free syrup or just plain. Enjoy these wonderful fries anytime of the year!