Slice the eggplants into rounds and season with salt. Let them sit for 10 minutes to draw out moisture, then pat dry.
Heat olive oil in a frying pan over medium heat. Fry the eggplant slices until golden brown on both sides. Set aside.
In a baking dish, spread a layer of marinara sauce. Add a layer of fried eggplant slices, then sprinkle with mozzarella and Parmesan cheese. Repeat the layers until all ingredients are used, finishing with a layer of cheese.
Sprinkle breadcrumbs on top and bake for 30-40 minutes, until the top is golden and bubbly.
Let it cool for a few minutes before serving. Enjoy!
Notes:
For a healthier version, you can bake the eggplant slices instead of frying them.