Ingredients
Equipment
Method
- Slice the eggplants lengthwise into 3/4 to 1-inch thick slices. Place the slices in a colander, sprinkling each layer with kosher salt as you go.
 - Set a plate on top of the eggplant slices and weigh it down with a heavy can. Let drain in the sink for 45-60 minutes to draw out excess moisture and bitterness.
 - After draining, thoroughly pat the eggplant slices dry with paper towels.
 - While the eggplant drains, prepare the tomato sauce. Heat 2 tablespoons of olive oil in a heavy saucepan over medium heat.
 - Add the chopped onion and cook until soft and translucent, about 5 minutes.
 - Add the minced garlic and cook for just 1 minute more, being careful not to burn it.
 - Add the canned tomatoes, salt, pepper, and red pepper flakes (if using). Simmer over low heat for about 30 minutes until the sauce thickens.
 - Stir in the freshly chopped basil and remove from heat.
 - Preheat the broiler. Brush the eggplant slices with the remaining olive oil on both sides.
 - Broil the eggplant slices until lightly browned on both sides, turning once.
 - Preheat the oven to 350°F (175°C).
 - In a large baking pan, spread a thin layer of sauce to cover the bottom.
 - Arrange a layer of browned eggplant slices without letting them touch each other (to maintain crispiness).
 - Top each slice with a spoonful of sauce and sprinkle generously with both mozzarella and parmesan cheeses.
 - Continue layering until all ingredients are used up, finishing with sauce and cheese on top.
 - Bake uncovered for 35-40 minutes until bubbly and the top is beautifully browned.
 - Let rest for 5-10 minutes before serving to allow the layers to set.
 
Notes
For the crispiest results, don't skip the salting step - it's crucial for removing excess moisture from the eggplant. Choose firm, glossy eggplants with no soft spots for the best texture. Freshly grated cheese melts much better than pre-packaged varieties. Leftovers can be refrigerated for up to 3 days and actually taste even better the next day as the flavors continue to develop. Reheat in the oven rather than microwave to maintain some crispness.
