1. Grind together the green chillies, garlic paste, ginger paste and blanched spinach in a mixer. Add the soy granules, salt, roasted cumin powder and red chilli powder and continue to grind.
2. Place the potatoes in a bowl, add the ground mixture along with onion and breadcrumbs and mix well. Heat a little oil in a non-stick pan. Divide the mixture into equal portions and shape each of them into tikkis.
3. Place the tikkis, a few at a time, on the pan and cook over medium heat till evenly golden brown on both sides.
4. Serve hot.