Step 1

Grease a 22-quart roaster pan very well. Turn to 350°F.

Step 2

Pour 1/4 of potatoes in an even layer in the bottom of the roasting pan.

Step 3

In a mixing bowl mix half of soup, half of sour cream and half of well softened or melted butter.

Step 4

Pour mixture and half of cheese over potatoes.

Step 5

Layer another 1/4 of the potatoes and mix well with a spoon. Half of all ingredients should be mixed together in the roaster.

Step 6

Add remaining potatoes to roaster.

Step 7

Mix together remaining soup, sour cream and butter and pour over potatoes. Mix well.

Step 8

Cover with a lid and stir every 20 - 30 minutes for at least 3 hours until the potatoes have reached your preferred tenderness.