Pour flour, salt, baking powder, sugar and nigella seeds (black onion seeds) into a large mixing bowl and mix until evenly distributed.
Add yoghurt and ghee (or oil) into the bowl and mix until thoroughly combined.
Pour milk followed by a whisked egg into the bowl and mix together until a dough has formed. Use your hands to knead the dough together. Cover with cling film and set aside for later use.If the dough is really sticky, add a small amount of flour and continue to knead. Repeat this until the dough is no longer sticky. Add lamb mince to a large mixing bowl followed by all the ground spices, diced chilli, coriander and ginger and garlic paste.
Separate the meat into 8 equal sized balls. To do this, I usually measure the total meat then divide the sum by 8. Each ball weighed around 67g each.
Separate the naan dough into 8 equal sections (typically 115g each) and roll into balls. Take one ball and make a hole in the centre with your fingers (the hole should be big enough for a ball of mince meat to fit inside).
Place one mince ball inside and use your fingers to wrap the naan dough to cover the meat (by bringing the ends together), pinch and twist to seal. Repeat for the remaining seven naan and mince balls. (Watch video to see)
Roll the naan dough filled with keema mince meat into a naan bread shape (usually a teardrop shape but you can also roll it into a circle). Brush one side with ghee or oil and sprinkle diced coriander on top (sprinkling coriander is optional).
Preheat a frying pan or tawa over a medium to high heat. Place a naan on the heated surface with the ghee side facing up. Allow it to cook for approximately 3 to 4 minutes, or until bubbles start to form. Then, carefully flip it over and toast the other side briefly.
One cooked, brush with extra ghee (or butter) and sprinkle extra coriander on top.