1.) Step One: Thoroughly wash all of the sweet potatoes/yams.

2.) Step Two: Cut the ends off of the sweet potatoes/yams. Cut the potatoes into chunks.

3.) Step Three: Place the potato chunks into a large pot of water on the stove.

4.) Step Four: Boil the potatoes for 25-30 minutes. The potatoes are ready when a fork inserted into the biggest potato chunk goes in easily.

5.) Step Five: Drain the water from the potatoes.

6.) Step Six: Peel the potatoes.

7.) Step Seven: Cut the potatoes into 3″-4″ chunks. Place the chunks in a oven-safe dish.

8.) Step Eight: Preheat the oven to 350* Fahrenheit.

9.) Step Nine: Once the dish is half-full, cut half of the butter into small chunks. Place the chunks evenly over the potatoes in the dish.

10.) Step Ten: Sprinkle half of the brown sugar over the potatoes in the dish.

11.) Step Eleven: Put the remaining potato chunks into the dish.

12.) Step Twelve: Chunk up the remaining butter and place it evenly on the potatoes.

13.) Step Thirteen: Sprinkle the remaining brown sugar over the potatoes.

14.) Step Fourteen: Cover the dish with aluminum foil and bake for 30 minutes.

15.) Step Fifteen: Before removing the dish from the oven, place the marshmallows evenly over the top of the potatoes.

16.) Step Sixteen: Bake for 5 more minutes.

17.) Step Seventeen: Remove from oven and enjoy!