Slice the eggplant thinly.
Sprinkle salt on the eggplant and let it sit for 10 minutes.
Prepare the tomato sauce.
Heat olive oil in a pan and grill the eggplant slices on both sides.
Layer the eggplant, tomato sauce, and cheese in a lasagna dish.
Bake at 180°C for 20 minutes.
Cut the finished lasagna into portions.