Preheat the oven to 200ºC, 400ºF, Gas mark 6. Line the base of 6 ramekins with nonstick baking paper and lightly grease the sides with some olive oil.
To grate the potatoes use a food processor. Squeeze out any excess water with some kitchen paper. Add the onions, flour, baking powder, egg whites, extra virgin olive oil and sugar to the potato mixture.
Season well with salt and freshly ground black pepper. Spoon into the prepared ramekins. Bake for 40 minutes or until golden.
*Some Kosher products may only be available in limited stores.