In a pan, add 2 Tbs of EV olive oil, the chopped onion and garlic.
Let them saute for 2 mins. and add the crushed tomatoes. Add the fresh basil.
Let the sauce simmer for about 10 mins. Set aside.
Wash the zucchini, cut both ends off and slice them long-ways a little less than a 1/4 " thick.
Fry the all the zucchini until the turn lightly golden.
Preheat the oven at 375F.
Take a baking pan or a clay pan, add a thin layer of tomato sauce and place two layers of zucchini slices with the second layer crossing the first.
Add a thin layer of sauce followed by slices of mozzarella and a generous sprinkle of Parmigiano cheese.
Repeat the process two more times.
Bake for 30 mins.