I start by washing the zucchini well and patting them dry. Then I slice them into very thin rounds — about 1/8-inch thick — either using a sharp knife or a mandolin slicer. If slices aren’t uniform, some cook faster (burn) while others stay moist.
To help prevent sogginess, I sometimes salt the zucchini slices and let them sit for 10-15 minutes. The salt draws out moisture. After that, I blot the rounds dry with paper towels before proceeding.
I toss the zucchini rounds with olive oil so they're lightly coated. Then in a separate bowl I mix the panko breadcrumbs, freshly grated Parmesan, and salt. I press each zucchini round into that breadcrumb-cheese mix until it’s well coated.
I preheat the oven to 425°F (≈ 220°C). I set a wire rack over a rimmed baking sheet (sprayed with cooking spray). I place the coated rounds on the rack and bake for about 15-20 minutes, watching for golden brown edges and crisp texture.
Once they’re out of the oven, I let them cool for a minute or two so they firm up more. Then I serve them warm with a dip — the Greek yogurt ranch is my favorite, but you can pick your own.