Bake the clean sweet potatoes in a 425F degree oven until soft in the center. This will take between 40-55 minutes. Check the doneness of the sweet potatoes by inserting a knife in the center, if it's soft it's ready.
4 medium sweet potatoes
Reduce the heat to 350F, then let the sweet potatoes cool down until you can handle them without burning your hands. Make the pecan topping (below) while the potatoes cool
Slice the sweet potatoes lengthwise, about 3/4 of the way up. This will remove the top, leaving the flesh of the sweet potato visible. Scoop out the sweet potato and put in it a medium bowl, making sure to leave about 1/4 inch of sweet potato in the skin to help keep the whole thing stable and supported.
Mash the sweet potatoes, add in the butter, maple syrup, salt, and cinnamon, and mix to combine.