Crush the Papad: In a mixing bowl, break the Urad Dal Papads into small bite-sized pieces. Do not crush them into a fine powder; keeping small chunks adds a great crunch.
Add the Veggies: To the crushed papad, add the sliced onion, shredded cabbage, chopped tomato, grated carrot, and green chillies.
Mix the Spices: Sprinkle in the cumin-coriander powder, hing, garam masala, salt, and fresh coriander leaves.
Add the Flours: Add the besan (gram flour) and rice flour to the bowl. Mix all the dry ingredients well before adding any water.
Make the Batter: Gradually pour in about 1 cup of water while mixing. The batter should have a medium consistency—not overly thick, but slightly loose.
Cook the Poli: Heat a flat pan or tawa on medium heat and grease it with a little oil. Pour a small ladle of the Urad Papad Poli batter and spread it evenly into a thin circle. Keep the pancakes on the smaller side for easy flipping.
Flip and Roast: Let it cook until the bottom turns golden brown and crispy. Drizzle a few drops of oil around the edges, flip it carefully, and press slightly with a spatula to cook the other side perfectly.
Serve Hot: Once both sides are beautifully roasted, remove from the pan and serve immediately!