Method for bati : In a bowl mix atta, salt, baking powder and butter. Mix well till it becomes crumbly. Add water and knead it to a tight dough.
Pour oil in appam pan and heat it. Make small balls from the dough & make cross mark on each ball. Keep the balls in appam pan, cover and cook on slow for 10-12 mins. Change the side and again cook on slow for 10-12 min. Now it has changed the color & cooked properly.
For dal : In a pressure cooker add moong dal, masoor dal, chana dal, water and oil. Mix well. Cover with a lid and cook for 4 whistles on high. Let it cool down.
Heat butter in a pan. Add mustard seeds, cumin and let it splutter. Add onion and cook till translucent. Add ginger garlic paste and green chilli paste. Cook for a min. Add tomato and cook for few mins till it becomes soft and mushy & raw smell is gone.
Add turmeric powder, red chilli powder, kitchen king, garam masala and salt. Mix and cook on slow flame. Add cooked dal mix well. Add 1 cup water or more according to the consistency of the dal. Boil & cook on slow for 5-10 mins.
Add coriander leaves and mix well. Dal is ready.
Now dip all the bati in melted butter and serve with dal.