We grill eggplant all the time! Yummy!!!
Slice off the top and the bottom. Slice the eggplant, 1/4 inch thick, lengthwise. You can either peel them completely before slicing (which my husband likes the best) or just discard the first slice on each side so that each slice only has a rim of peel (which I like best).
Soak, completely covered, in cold water for 30 min. The slices will want to float, so I usually put a bowl or something on top to hold them under the water.
Brush with olive oil. Grill until soft - just a few minutes on each side.
The soaking and olive oil are very important with grilling or the eggplant will get dry and rubbery.
We then either it fresh off the grill, make panini sandwiches, or use them in vegetable lasagna.
We usually grill zucchini at the same time, using the same method.
Enjoy!