Creating Candied Sweet Potatoes is straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Sweet Potatoes: Peel the sweet potatoes and cut them into 1-inch thick slices or cubes.
3. Melt Butter: In a saucepan over medium heat, melt the unsalted butter.
4. Combine Ingredients: Add brown sugar, water, vanilla extract, cinnamon, nutmeg, and salt to the melted butter. Stir until well combined and sugar dissolves.
5. Arrange Sweet Potatoes: Place the sweet potato slices in a greased baking dish, arranging them evenly.
6. Pour Mixture: Pour the butter and sugar mixture over the sweet potatoes, ensuring they are well coated.
7. Bake: Cover the baking dish with foil and bake in the preheated oven for 25 minutes.
8. Uncover and Stir: After 25 minutes, uncover the dish and stir the sweet potatoes to ensure even coating.
9. Continue Baking: Return to the oven and bake for an additional 10-15 minutes, or until the sweet potatoes are tender and caramelized.
10. Optional Marshmallows: If desired, add mini marshmallows on top and return to the oven for an additional 5 minutes, or until they are golden brown and puffed.
11. Serve Warm: Remove from the oven and let cool slightly before serving.

These steps will guide you in creating this incredible dish effortlessly.