Heat up 2 tbsp oil in a pan. Add in cumin seeds and wait until fragrant and changes color.
Add in sliced yellow onion, serrano, garlic, ginger and white part of scallions along with ¼ tsp of salt. Mix well and cook until the onion starts to translucent, but not brown.
Add in chopped spinach, mix well and cook until wilted. Add in edamame, mix well and cook for couple more minutes. Take the mixture off of stove and let it cool down a bit.
While your veggies are cooling down, take seitan out of the package and crumble it up very tiny in food processor. Then dry roast it in the same pan you cooked veggies in without any oil. Skip this step if using shredded tofu or paneer.
Process cooked veggies in the food processor until you get some grainy texture but not mushy.
Now you should have three items ready. Hung yogurt, crumbled/dry roasted seitan (or tofu/paneer) and crumbled up cooked veggies. Take all these three in a big wide bowl along with ½ tsp of more salt, red chili powder, turmeric powder, cumin coriander powder, black pepper powder, chaat masala, garam masala and cilantro. Mix well until everything is combined.
Form 12 patties/kebab out of these mixture. The patties/kebab should be same sized diameter as your brioche slider/burger bungs. If you have big buns, you will end up with less 12 patties/kebab. Place these patties/kebab in the fridge for 30 minutes, or longer if you are prepping them ahead of time.
When ready to cook the patties/kebab, take them out of the fridge. Coat each one well with panko/bread crumbs and cook on a skillet with some oil on both sides until nicely crispy from the outside. Top each kebab with some shredded pepper jack cheese and cover it until melted.