Two Tone Potato Roll

Directions

1. 1
   Boil all of the potatoes until soft and drain.
2. 2
   Saute onions until translucent.
3. 3
   Mash the white potatoes and add salt, onions, and margarine.
4. 4
   Spread the white potatoes onto a large sheet of aluminum foil to half an inch thick - keep it rectangular shaped.
5. 5
   Mash the sweet potatoes.
6. 6
   Spread the sweet potatoes over the white potatoes.
7. 7
   Roll up the potatoes jelly-roll fashion, using the foil to help you roll.
8. 8
   Transfer to a baking sheet and freeze for 5-6 hours.
9. 9
   Preheat oven to 400.
10. 10
    Slice the roll on the sheet.
11. 11
    Bake for 15 minutes.