Preheat the oven to 180°C. Cut the eggplant in half and sprinkle both halves with salt and pepper. Put the eggplant in the oven for about 25-30 min.
Meanwhile we will make the filling for the eggplants. Sprinkle I little bit of olive oil on a pan on medium-high heat. Cut the pepper and the mushrooms in small pieces and put them in the pan. When they start having a slightly brown caramelized color, lower the heat and spill the tomato sauce in the pan. Add the oregano and some salt and stir for 5-7 min
When the eggplants are ready take them out of the oven and shower them with the sauce you made. Sprinkle with some feta and rosemary and then add the final touch... the cherry tomatoes. After that put the eggplants back in the oven for another 15-20 min until the feta cheese starts melting a little bit
Take them out of the oven and let them cool for 5 min before you enjoy