firstly, in a blender take 3 tomatoes, 3 dried red chilli and 1 inch ginger.
blend to smooth paste without adding any water.
transfer the tomato masala paste into large mixing bowl.
now add ½ cup rava, ½ cup rice flour and ¼ cup wheat flour.
further add 2 cup water and mix well.
additionally, add 1 onion, 2 tbsp coriander, 1 tsp cumin, ½ tsp pepper and 1 tsp salt.
allow to rest for 20 minutes or until rava absorbs water.
furthermore, add 1 cup water and mix well.
prepare a watery consistency batter like rava dosa batter.
now carefully pour the dosa batter over very hot tawa.
also spread a tsp of oil uniformly. lower the flame and cook until the dosa turns golden and crisp.
finally, fold the dosa and serve tomato dosa immediately with tomato chutney or coconut chutney.