Organic eggplants are large pear-shaped vegetables, averaging 20cm in length, with a glossy purple skin and firm white flesh. They contain many fine seeds, and have a green stem. The eggplant can be cubed or cut into rounds, depending on your preference and the way you want it to be cooked. In order to cook eggplant in a pan on the stove, all what you have to do is heat olive oil in a pan over medium or medium-high. Once the oil is hot, add the eggplant and cook around five minutes until the eggplant is tender.