Pre-heat the oven in 200 degree c for 10 minutes.
Cut Potato and Onion into thick slices and place those in a baking tray after applying some Mustard oil on the tray. Making of the baking bed with veggies is optional but these baked veggies taste amazing while serving with the grilled fishes.
Place marinated fish pieces on the Veggie bed and then place Garlic cloves here and there.
Now apply some Mustard oil over the fish pieces using a pastry brush.
Place the tray in the middle rack of oven and bake for 10 minutes in 180 degree c.
Take the tray out of the oven and flip the fish pieces and again bake for 10 minutes in 180 degree c.
Now take the tray out carefully and place only fish pieces on a grill rack and apply Ghee over the fishes and then grill in 200 degree C for 10 minutes.
Take fishes out of the oven and serve with the veggies baked along with the fish and with some chutney and salad of choice.