Add ingredients to a separate bowl and stir until well combined.
In a 11"x 8" x 3" or similar size casserole baking pan, layer in this order: spray with cooking oil, zucchini, tomato, parsley, salt and pepper, cheese, bread crumb topping.
Bake in a 400F oven for 30 min covered with foil. Remove foil and bake another 10 min. so the bread topping can brown.