to a bowl add 1 cup rice flour, 1/2 cup maida, 1/2 cup roasted rava, if you are roasting rava just before preparing, make sure it is back to room temperature before adding it. Add finely chopped green chili and onion. Add 1tbsp of desiccated coconut. add 1tsp cumin seeds, salt, pinch of sugar mix well.
dry roast groundnuts and red chili, crush them to a coarse mixture and add to the flour.
do not add any water add 1tbsp melted butter/ghee/oil and knead the dough. The juice from onion should be helpful to knead a stiff dough, only when this juice is insufficient,.instead of adding water, dip fingers in a bowl of water and continue kneading. Make the dough tight and knead well with minimum water.
once the dough is ready, take a lemon sized portion of dough, press and flatten between the palms. Deep fry in oil on medium-low flame, frequently turning the sides, until it turns into golden yellow color on both sides.Once done serve with chutney.
for perfect maddur wada which does not absorb excess oil, the dough should be tight & stiff, hence use as lil water as possible. Fry the maddur wadas soon after kneading the dough, if the dough is left aside for longer, onion leaves out juice, which might require some more flour to compensate for the stiffness