Preheat oven to 425 F. Prepare a baking sheet with parchment paper.
Peel and slice the sweet potatoes in half. Add sliced sweet potatoes to the baking sheet. Spray lightly with cooking spray and sprinkle cinnamon on potatoes.
Roast potatoes 35-40 minutes just until the edges begin to brown. Remove sweet potatoes from the oven and add them to a food processor (you can use a hand mixer as well).
Turn the oven down to 325 F.
To the sweet potatoes, add the olive oil, cinnamon, maple syrup, sea salt and vanilla and mix ingredients well until smooth.
Pour the sweet potatoe mixture into a 8-inch by 8-inch baking dish. Sprinkle with ground flax, coconut, pecans and marshmallows on top.
Bake 8-10 minutes just until marshmallows begin to brown. Remove from the oven and enjoy!