1. Preheat oven to 375 degrees F. Place whole sweet potatoes on a sheet pan lined with a Silpat or parchment paper. Roast until tender when pressed.
2. In a saucepan, heat the olive oil and shallots over medium heat. Add a pinch of salt and lower the heat, continuing to cook until the shallots are soft and caramelized.
3. When the shallots are just about ready, peel away the skin from the still hot sweet potatoes and add the flesh to the shallots. Mash well and add the nutmeg and pepper.
Source of recipe: I wrote this recipe.