Wash and clean urad dal, make a coarse paste of the urad dal and green chillies with very little water.
Heat 1 tbsp oil in fry pan, temper with asafoetida and shah jeera and let them sizzle for a while. Add the ginger paste, saute for a while. Now add the ground dal paste, turmeric powder, salt and sugar.
Keep stirring over medium heat, taking utmost care that the dal paste does not stick to the bottom of the pan.
Once the dal takes on a light golden colour and becomes almost dry, allow it to cool. Keep aside.
Knead the flour with a little salt, 2 tablespoons of cooking oil and a little water to form a soft dough. Keep the dough covered for half an hour or so with a moist cloth.
Make small balls of the dough, flatten each one in the palm of your hand to form a cup, fill with a spoonful of the dal stuffing and reshape into a ball. Again flatten each dough ball filled with the dal stuffing and roll out into a circle, taking care that the the stuffing does not break through the dough.
Heat oil in a kadai. Fry the radhaballavis till golden brown. Serve hot with aloor dom.