Slice the sweet potatoes length wise into pieces that resemble long french fries. Then in a pot of boiling water, in batches, lay your potatoes in the water. Once they cooked enough to where the potatoes are slightly pliable but not too soft to the point where they will fall apart, pull them out with a slotted spoon and place them on a rimmed baking pan. This will allow any excess water to drip off.

Once you've done this for all of the potatoes, brush on your fat onto all of the fries. Then sprinkle on the salt evenly. Bake in the oven at 350 for about 20 minutes (until they are crispy, but not so crispy that they're crunchy). The insides should be soft and warm, while the outside should be crisp.

Once they're done, sprinkle with the cinnamon sugar and enjoy!