To make chutney, put mint leaves, coriander leaves, roasted Bengal gram, garlic, ginger and green chillies in a mixer jar. Quarter onion and add to the mixer along with 4-5 tbsps water and salt and grind till smooth. Transfer into a bowl, add lemon juice and mix well.
Thickly slice cottage cheese and slit the slices without cutting through.
Insert 3 aam papad pieces in the slits of each cottage cheese slice.
Coat the stuffed cottage cheese slices with the chutney.
Heat oil in a non-stick pan
Place banana leaf pieces on worktop, place one cottage cheese slice on each piece and fold the leaf to make a packet.
Place the packets in the pan, cook till the underside is browned, flip and cook on the other side similarly.
Arrange the banana packets on a serving plate, open one of the parcels and serve immediately.