5 large yams (peeled and cut into 1/2 inch to 1 inch cubes )
1 cube butter
2/3 to 1 Cup Brown Sugar
2 cups of mini marshmallows (or more if you prefer)

Place the cubed yams in a 9x13 baking dish. Cut the butter into small pieces and dot the yams with them. Sprinkle brown sugar evenly on top of the yams and butter. Finally sprinkle marshmallows on top and cover tightly with foil.

Bake at 350* for about 1 to 1/2 hours or until fork tender. When you uncover the pan be careful and watch for steam escaping. The marshmallows will have disappeared, gently stir the yams. They are ready to serve at this point or ,(You can at this point and sprinkle with additional marshmallows and bake uncovered just until the marshmallow are toasted and not completely melted)