Ingredients 

For dosa  

• 1 cup rice flour
• 1 cup maida flour 
• 3/4th cup urad dal
• 1/4th cup channa dal
• 2 tsp. Sugar
• Salt 

For Masala 

• 4-5 big potatoes,boiled, peeled and slightly mashed 
• 4-5 big onions cut length-wise 
• Cooked green peas 
• 5-6 green chillies 
• 1/2 tsp. Turmeric powder 
• 1 tbsp. Oil and 2 tblsp. Ghee to season
• 1/4 tsp. Mustard seeds , urad dal, little saunf
• Salt 

For Masala 

• Pour oil & ghee in a kadai, heat up and add mustard seeds and let it splutter. 
• Add urad dal, saunf and fry till they become slightly brown 
• Add the onions and fry till it turns to pink color, then add the chillies and fry for 2-3 minutes. 
• Add the potatoes, green peas, salt, turmeric powder and saute for few minutes and remove from fire. 

For Masala-dosa 

• Soak the dals for 6-8 hours, then drain and grind to a smooth paste 
• Mix rice flour, maida, the dal paste, sugar and salt to dosa consistency and Leave it covered for 8 hrs to ferment. 
• Take a ladle full of this dough and make thin dosas 
• When dosa looks cooked (while still on tava), take a spoonful of the masala filling and keep it in the center of the dosa, fold it into half circle shape, smear some ghee over it