Potato with cheese is a members-only food item that heals 160 life points and is consumed in one bite. It can be made at level 47 Cooking by using a piece of cheese on a potato with butter. This grants 40 Cooking experience and does not require use of a fire or range.
Cooking all ingredients from scratch for a potato with cheese gives 199.5 cooking experience. Before the infinite stocks in shops update, they were sold for only 9 coins each, but now sell in the Warriors' Guild for 350 coins.
This is a fairly uncommon food. Monkfish offer identical 160 life points single-bite healing, are 0.1 kg lighter, much more easily obtainable, and less expensive. In addition, unlike the mushroom potato and tuna potato, it is also unprofitable to cook a potato with cheese if the final components are purchased from the Grand Exchange.
On a side note, a player needs a Cooking level of 47 to apply cheese to a baked potato, where as they need a Cooking level of 48 to churn cheese.
A player owning a player-owned house with a teak larder and range may have a much easier time creating a potato with cheese. An infinite amount of potatoes, cheese, and milk are available, and the potatoes can be cooked on the stove. The process would still take a while, however it would be virtually free (costing only time mainly in obtaining butter).
Also, an easy area to make them is north of East Ardougne. There is a potato field, some cows (Including a dairy cow), and a farming store that has a dairy churn, has a cooking range, and sells buckets in case none have been brought. For those who have at least 10 Thieving, farmers walk around, as well as a Master Farmer (which requires level 38 Thieving) for some quick money to buy the buckets. Using this method, all one would need to bring is a knife to slice the cheese.