Large pan raw sweet potatoes
1 c. white sugar
1 c. dark brown sugar
1 c. miniature marshmallows
1/4 c. water
1 stick butter

Bring to a boil all the above ingredients. Make sure the marshmallows are melted. Pour over potatoes. Bake at 400 degrees for 1 hour. After 30 minutes turn over each one and cook for the other 30 minutes.