Preheat the oven to 425°F and line two baking sheets with parchment paper. Sprinkle the eggplant slices with salt and let them sit for 10 minutes, then pat dry with a towel to remove excess moisture.
Dip each eggplant slice into the beaten eggs, then coat it evenly with breadcrumbs. Arrange the slices in a single layer on the prepared baking sheets.
Bake the eggplant for 20 minutes, flipping the slices halfway through, until they turn golden and crisp on the edges.
Spread a thin layer of marinara sauce in the bottom of a 9x13-inch baking dish. Add a layer of baked eggplant slices, followed by more sauce, mozzarella, and parmesan. Repeat the layers until all ingredients are used, finishing with cheese on top.
Bake for 25 minutes until the cheese is bubbly and lightly browned. Remove from the oven and scatter the torn basil over the top before serving.