Cut off stem and bottom of eggplant. Peel off any tough or bruised skin (leave the rest of the skin intact).
Wash eggplant in cold water.
Slice into 1/4 inch thick slices. Cut out any dark or brown spots in the eggplant meat.
Scramble egg in one bowl. Place milk in another bowl and flour on another bowl.
Dip your eggplant slices first in the milk, then the egg and dredge in flour.
Fry in oil at 325 degrees. Drain excess oil.
Make up to three layers of eggplant.
Top each layer with grated Parmesan or Romano cheese.
On top of the grated cheese place one slice of mozzarella on each stack.
Add spaghetti sauce only on top layer.
Cover dish and bake in 350 degree oven for about 35 minutes, until heated through and cheese is melted.