Heat 1 tbsp oil in a same wok/pan. Saute chopped serrano pepper, grated ginger and minced garlic for 1 minute. Add all the charred veggies and boiled baby corn to it and give it a good stir. Let it cook for 2-3 minutes. Add 1½ cups of water to the veggies and cook it for another 2 minutes on high.
While water is heating up in with veggies, make corn starch paste. Mix 1 tbsp of corn starch, ¼ cup of water, 1 tbsp sriracha sauce, 2 tbsp of tomato ketchup and 2 tbsp of low sodium soy sauce. Mix it very well making sure there are no lumps.
Add cornstarch paste to the veggie/water mix stirring frequently. Bring it to boil, stirring frequently. Once the sauce gets thickened, add crispy tofu, chopped cilantro and chopped scallions to it, Give it a good stir making sure tofu does not break. Add black pepper, stir and taste. Add salt if needed.
Serve hot with steamed white rice, brown rice or quinoa!