Season yoghurt with a little lemon juice, cumin, paprika, salt and pepper. Wash and clean the spring onions. Peel and wash the carrots. Cut vegetables diagonally into pieces. Wash lamb fillets, dab dry and cut into larger pieces.
Heat the oil in a frying pan. Fry the carrot pieces for about 1 minute, then add the lamb filets. Fry over a high heat for about 2 minutes, turning over. Dust with curry and paprika and season with salt and pepper.
Add spring onions and mix with the remaining ingredients. Deglaze with orange juice and simmer for 1-2 minutes. Add chutney and season with salt, pepper and curry. Toast naan bread. Arrange lamb pan with a blob of yoghurt on plates.
Add bread.