Drain water from sweet potatoes and set aside.
Whisk together refined flour, sugar, cinnamon powder, soda bicarbonate, milk and sufficient water to form a smooth batter of medium consistency. Add grated sweet potatoes and mix.
Heat 1 tsp oil and 1 tsp butter on a non-stick tawa, pour a ladleful of batter and spread it evenly. Cook for 2-3 minutes or till the underside is golden. Flip, and cook on the other side for 2-3 minutes. Transfer onto a plate. Similarly, make all that pancakes.
Transfer the pancakes onto a serving dish. Sprinkle some icing sugar and cinnamon powder. Drizzle some honey and serve hot.