Ranch Potato Grilled Cheese Sandwich

red potato, washed and dried

olive oil

salt and freshly ground black pepper

slices bacon (, cooked crisp and drained)

Colby Jack or Cheddar Cheese (, sliced (I used Hook's Marble Jack Wisconsin Cheese - it's SO good))

slices fresh firm bread ((don't use the light and fluffy, airy kind of bread, use something fairly heavy))

Ranch dressing*

butter (, softened)

green onion (, diced)