Begin by slicing the eggplant either horizontally or longwise in about 1/4" slices.
Place flour, eggs(beaten) and bread crumbs into three separate bowls.
Dip each eggplant slice into flour...
Then egg wash..
And coat with bread crumbs.
Preheat oven to 425 degrees and add cookie sheets or pizza pan with sides and olive oil to preheat pans before adding eggplant.
Add coated eggplant onto hot pans and add to the preheated oven.
Season with salt and pepper and dried oregano.
Bake for 10 minutes and turn each slice over. Continue cooking for another 20 minutes and remove from the oven.
Reduce oven temperature to 350 degrees.
In a 9 x 13 pan, add marinara or spaghetti sauce and top with one layer of cooked eggplant.
Top with mozzarella and ricotta cheese. Repeat with another layer of tomato sauce, eggplant, and cheese. End with parmesan cheese.
Bake in preheated oven, uncovered, for 45 minutes or until the cheese is beginning to brown and sauce is bubbly.
Cool for a few minutes before serving.