In a mixing bowl, add the boiled and mashed mixed vegetables. Stir in the chopped onions, green chilies, roasted cumin powder, black pepper, lemon juice, coriander leaves, and both salts. Mix everything thoroughly until the flavors are well combined and the vegetables are evenly seasoned.

Next, add the whole wheat flour and begin kneading, using lukewarm water as needed to form a soft and pliable dough. Once the dough is ready, divide it into small portions and roll each piece into a smooth ball. Gently flatten them by hand or use a rolling pin to form round rotis of medium thickness.

Heat a tawa or skillet over medium flame and brush it lightly with oil. Place one roti on the hot surface and cook on each side until golden brown spots appear, pressing gently to ensure even toasting. Repeat the process for the remaining dough.

Serve the vegetable rotis warm, straight off the pan, with a bowl of fresh dahi (yogurt) or your favorite chutney for a wholesome, flavorful meal.