You can prepare potato pakora.
add a pinch of red chilli powder, dhania powder, asafoetida, salt according to taste, finely chopped onions, garlics, coriander leaves and a handful gram flour with the mashed potatoes. Mix all the ingredients (mixture should be tight enough for preparing balls). Heat oil in a pan, make small balls of the mixture and deep fry. you can serve potato pakoras with dhania chutney or simply tomato sauce.