Peel and slice eggplant and soak 30 minutes in very salty water (1 tablespoon salt to 2 cups water). Drain and in greased casserole layer: eggplant slices, sliced onion, sliced tomatoes, Italian bread crumbs.

Repeat layers. Bake 30 minutes at 350 degrees, top with grated cheese and bake until cheese melts.