Remove soybeans from the packet and transfer them to a bowl with water such that the the beans thaw. Also, wash the Arugula leaves and keep them aside.
Knead a soft dough by combining all the ingredients. Cover and rest this dough.
Dry roast besan (gram flour) in a pan on medium heat. Constantly mix with a spatula, or else the flour will burn. Roast for about 5 minutes.
Then, transfer this roasted flour to a plate and keep it aside.
In the same pan, add oil, followed by chopped green chillies, garlic and ginger.
Fry them on medium heat for 1-2 minutes.
Add chopped onion.
Add cumin seeds and asafoetida. Continue frying on medium heat till the onions turn translucent.
Add soybeans, followed by all the spices, namely turmeric powder, red chilli powder, coriander powder, roasted cumin powder, dry mango powder and salt.
Sprinkle some water. Cover the pan with a lid, reduce the heat and let the beans cook. Mix and check in between.
Once the beans are cooked, mash them with a masher.
Add chopped arugula leaves.
Cover and cook for about two more minutes.
Add roasted besan. Mix everything and cook for another 1-2 minutes. Taste and adjust salt.
Now, the stuffing is ready. Keep it aside to cool.
Once the mixture cools, divide it into portions.
Knead the rested dough once more. Divide it into portions.
Take a portion of the dough, roll it (use dry flour so that it is easy to roll) and place a portion of the stuffing in between.
Cover the stuffing with dough.
Roll and flatten it.
Place it on a hot pan. Add oil and fry till the parantha becomes crispy.
Serve with butter, pickle and yoghurt.