1 kg (2 lb) cooked mashed potatoes
1 cup white rice flour
¾ cup potato starch
¼ cup corn starch
1 tablespoon margarine
1 tablespoon grated parmesan (optional)
Mix all ingredients with hands. Knead lightly. Shape small portions of the dough into long snakes. On a floured surface, cut snakes into small pieces. Place a few gnocchi in salted boiling water. As the gnocchi rise to the top of the pot, remove them with a slotted spoon. Repeat until all are cooked. Cover with hot tomato sauce and serve. You can he re-heat them using a microwave oven.