Preheat the oven to 425°F. Grease the baking dish with cooking spray.
Place a wire rack on a sheet pan and arrange the eggplant slices on top. Sprinkle with salt liberally. Allow to stand for 20 minutes, then rinse off the salt. Pat the eggplant slices dry with paper towels.
Pour the flour on a plate and mix the breadcrumbs, Italian seasoning, parmesan, and salt on another.
In another bowl, whisk the almond milk and cornstarch together.
Dredge the eggplant slices first into the flour. Then, dip them into the milk and coat them in the breadcrumb mixture.
Arrange the coated eggplant slices in a single layer on the greased baking dish. Spray the tops with cooking spray.
Bake your vegan eggplant parmesan for 30 minutes. Top them with mozzarella cheese and bake for 10 minutes more.
To serve, heat the marinara sauce over low heat. Arrange the baked eggplant parmesan and marinara sauce with the spaghetti. Serve with basil and more parmesan. Enjoy!