To prepare rabdi, take a thick bottom kadhai and pour the milk in it and bring it to a boil.
Once it boils, turn the flame to low and keep stirring until the milk reduces to about 300 ml. Remember to scrape the sides and bring the scrapes back in the boiling milk to get the lachhas.
Once ready, cool the rabri and then layer it with the crushed laddoo, nuts, saffron, and cinnamon powder. Top it with saffron and nuts.
Pan-fry the marinated paneer slices on a grill pan or a non-stick pan till golden brown marks appear. Do not over cook and harden the paneer. Heat the sauce. Place most of the tomato sauce in an oven-proof flat dish or platter. Arrange steaks. Sprinkle the remaining sauce on the steaks. Sprinkle topping mixture.
Add the gattas, garam masala and mint and bring to a boil, cover and simmer for 10 minutes. Adjust the seasoning, garnish with grated paneer and coriander. Serve hot.