Heat oil in pan. Add the mustard seeds and urad dal and wait for them to crackle.
Add the onions and sauté until they become transparent.
Add the ginger garlic paste and fry till the raw smell disappears. Add the tomato and sauté till the oil leaves the sides of the pan.
Grate the carrots and add to the onion tomato mixture. Continue to fry till the carrots are completely cooked. Add salt to taste.
Beat the eggs lightly and add it to the pan. Stir till the eggs are cooked and mixed well with the vegetables.
Now place this filling inside a chapati and roll it tightly. Wrap aluminium foil on one end to hold the filling in. Serve with tomato sauce.