Leave the spiced lamb dumplings on the bench to thaw for half an hour.
Prep the veggies by dicing the onion and finely chopping the garlic (or using a garlic press!).
Add a drizzle of vegetable oil to a frying pan over medium heat.
Add sliced onion and a sprinkle of mustard seeds (optional) to the pan and stir. Cook for 2 minutes.
Add chopped garlic, cumin seeds, ground cumin, turmeric, ground coriander and stir. Cook for 2 minutes.
Add the chopped tomatoes and stir together. Cook for another 2 minutes.
Season to taste with salt and pepper, and then pour the tomato sauce into a bowl. Set aside.
Add a drizzle of oil into the same pan over medium-high heat.
Add the spiced lamb dumplings and pan fry for two minutes on each side.
Serve the dumplings on top of the Kasundi tomato sauce! Garnish with fresh coriander leaves. Enjoy!