Placed sliced eggplant in a strainer and sprinkle with salt. (I layer them and sprinkle lightly with salt for each layer). Let sit for at least one hour. Pat dry with a paper towel. (This will help release any bitterness in the eggplant).
Lightly oil a baking sheet (or two) with olive oil and preheat the oven to 400 degrees.
Whisk eggs together with a splash or water in a small bowl. In another bowl pour the breadcrumbs.
Dip each slice of eggplant in the egg and then in the breadcrumbs. Then place on the lightly oiled baking sheet.
Bake at 400 degrees for 20 minutes, until lightly browned on the bottom.
Flip eggplant slices and return to oven for another five minutes until the other side is lightly browned.
Top each slice of eggplant with marinara sauce, mozzarella, and a sprinkle of Parmesan. Return to oven and bake until cheese is melted (about another 5 minutes).