Preheat your oven to 400F. As your oven preheats, poke each sweet potato with a fork to allow steam to leave as it bakes. Drizzle olive oil over the potato and wrap individually in foil.
Place on a baking sheet and bake for 40-50 minutes until they are soft and you can poke a fork in the potato and have it easily slide off.
Let the potatoes cool so you can handle them. Scoop out the inside of the potatoes leaving about 1/4 inch or so around the outside to keep the shape.
In a bowl, hand mash together your sweet potato, butter, brown sugar, vanilla extract, Holiday Spice Mix.
Spray your 9x9 casserole dish with cooking spray.
Fill your potatoes up with the mixture and place in your casserole dish.
Preheat your oven to 350F.
Top your sweet potatoes with cinnamon sugar (about 1 TBSP per potato) and a sprinkle of cinnamon.
Top that with pecans.
Top that with mini marshmallows.
Bake at 350F for 35-40 minutes. Until heated throughout and marshmallows are melted.