Take butter, olive oil, black pepper, basil, salt in a small bowl and mix them well. Cut potatoes from one end to other creating thin slices as shown.
Take a baking pan and put the sliced potatoes. Now apply the butter mixture between each slices of the potato with the help of a brush or spoon. Drizzle rest of the butter on top and the potatoes are ready for baking. Put them into oven & bake for 30 mins or until golden brown as shown. The potatoes should be fork tender.
Put some cheese between each slice and on top to get that cheesy flavor :). Cook it to impress your near and dear ones :)
In case you are making as a fasting recipe, you can substitute ghee for butter.
You can prepare a similar dish using sweet potatoes.