Boil the potatoes for 15-20 minutes, until tender.
Take a large bowl and rice the potatoes
Add butter, sugar, cream, and salt
Mix well and let it cool for a few hours
Add flour to the bowl and mix well. The dough should be a little sticky, but not too much. If it's too sticky, add more flour.
Divide the dough and cut into 10-15 pieces and shape them into balls. Use a lefse rolling pin and roll out the lefse balls until they are thin.
When finished, you can either use a griddle to make the lefse or fry them in a non-stick pan on a stovetop on medium heat.
The griddle should have a temperature of 200°C (400°F). Use a thin spatula, preferably a lefse stick when cooking on the griddle or pan.
Cook for 1 minute or until small bubbles appear on the uncooked side, use the thin spatula or lefse stick and flip them. Cook for another 30-45 seconds on the other side.
Stack them on a plate or towel, and continue with the next lefse.