- Preheat oven to 190C Peel potatoes and slice in half lengthways.
- Using a small sharp knife, make cuts 1/4 inch apart from top almost to bottom, across all of potato.
- (be careful not to slice right through) Mix butter and oil together and brush potatoes liberally with it.
- Sprinkle with the salt and pepper.
- Bake for about 45 minutes or until tender.