Eggplant something:
Get some eggplants - cut them in slices - the way you cut bread. Then put the slices in a large dish with a lot of salt and leave them for an hour to get the bitterness out. Then dry them, coat them with flour and fry them in a deep pan with a lot of oil. Take them out. In a separate pan prepare thick tomato sause and just before you take it away from the hot plate put in it some large  bits of cheese (white Bulgarian chese). Do not keep them long enough to melt! Cover the fried eggplant slices with the sause. It goes well with garlic.
That's a great summer dish and one of my favourites.  But I don't know what kind of eggplants you would find during the winter. Maybe you should stick to the кьопоолу recipe above. But this one you can get ready made from the shop or better yet ask one of your Bulgarian frieds to get you a home made one. Personally, I am not much into it. 
As for the lentils - well, make the soup. It looks like the bob chorba but is prepared in a different way.