Preheat oven to 400°F/205°C. Spray a casserole dish or 9"x13" pan with nonstick spray, set aside.
Start by removing the stems and heel of the eggplant, then slice the eggplant into ¼"-½" slices lengthwise from root to tip (you should get about 16 slices total). Sprinkle kosher salt on both sides of the eggplant slices and let them sit on a wire rack for 20 minutes to draw out the moisture. Either wipe off the salt from the eggplant using a paper towel or rinse it off and pat dry.
Place the eggplant on a lightly greased baking sheet and bake in preheated oven for about 20 minutes to soften the eggplant; set aside to cool slightly.
Meanwhile, make the filling. In a large bowl, stir together the ricotta, egg, Parmesan cheese, and Italian seasoning.
Spread ½ c marinara sauce on the bottom of the prepared pan. Cover with a layer of the roasted eggplant (½ the eggplant), then top with ½ the ricotta mixture, ½ the shredded mozzarella, and spread on ½ c of marinara sauce. Repeat the layers, ending with the mozzarella on top.
Bake for 30-35 minutes, or until the cheese on top is browned and bubbling. Let stand for 10 minutes, then top with fresh basil (optional), slice and serve!
Tags: casserole, dinner, eggplant, gluten-free, Italian, main, nut-free, vegetarian
