Add ghee to a frying pan or kadai pan and fry the chopped paneer. You can skip this step if you want and mix in the fresh chopped paneer into the stew at the very end.
Take another tablespoon of ghee and heat in the pressure cooker; heat, then add ginger, cumin seeds, chopped green chili, black mustard seeds, cook and stir for a few minutes until the seeds sputter and a nice fragrance is released.
Add the chopped tomato and cook and stir for about 5 - 8 minutes, until the tomato is soft.
Add the turmeric & coriander powders, salt and pepper (and vegetable cube if using) and cook and stir for a few minutes to remove rawness from the spices.
Add the rinsed red lentils and chopped green beans, (and fresh paneer IF you are not going to pan fry it); stir to mix well. Add the vegetable broth (or water) mix well, cover and turn heat to medium low and cook for 4 - 5 whistles.
Remove from heat and allow to sit until pressure is naturally released.
Stir in the lemon juice, pan fried paneer and fresh chopped cilantro.
Serve with a side of plain dahi (plain yogurt).