Cheesy Veggies in Garlic Yogurt

Try this heavenly taste food just with some ingredients as follow:

2 eggplants
1 bell pepper
1 red paprika
1 big onion
1 whole garlic cloves (some for inside the dish and some for the yogurt)
some potatoes (like 2 medium size)
1 full cup tomato puree
1 cup yogurt
mozzarella cheese (optional)

for the spices:
salt
black pepper
1 tsp turmeric
1 tsp coriander seeds