Heat the oven to 400 degrees. Cut the eggplant in half and place both halves on a baking tray. Cook for approximately 20 minutes.
Take the pan out of the oven and remove some of the eggplant pulp out.
Heat up 1 tbsp of olive oil, add finely chopped onion and garlic and cook for 3 minutes. Add the eggplant pulp, cumin, mushrooms and tomato and cook for 5-7 minutes. Season with salt and pepper.
Add lentils and tahini, mix together and cook for 2 more minutes.
Sprinkle a bit of salt and olive oil over the eggplant shells.
Divide mixture evenly between the eggplant shells. Cook for 10 more minutes.
Serve with a dollop of Garlic Tzatziki, parsley and pomegranate seeds.