This dish is so amazing. As other reviewers have noted, my lentils were done in about an hour. I felt like the yogurt masked some of the flavor of the wonderful spices so next time I will either add half the yogurt or I will increase the spices. I served with naan - delicioso!
Very good, and easy to make. The lentils were done in under an hour, despite the instructions to cook for 2 hours. I used commercial curry powder and crushed tomatoes.