To begin, in a large bowl, mix together the mashed potatoes, mashed boiled rice, and grated cheese.
Add in the dry masalas - salt, Kashmiri red chilli powder, cumin powder, coriander powder, and amchoor powder.
Finally, add in the cornflour, all-purpose flour, and baking powder. Mix well.
Grease your palms with oil so that the mixture does not stick. Shape it into balls of the desired size.
Roll the balls in the breadcrumbs and dust off the excess. Keep aside.
Heat oil for deep frying. Add the balls in batches on medium to high heat. Do not overcrowd or the oil will cool down. Deep fry until golden.
The Cheesy Potato Rice Balls are ready to serve. Enjoy them with a dip of your choice.