Grate zucchini and potato, then squeeze out as much moisture as possible using a clean cloth or paper towel
In a bowl, combine zucchini, potato, Parmesan, mozzarella, eggs, flour, garlic, onion, and seasonings. Mix until well combined
Grease a muffin tin or line it. Scoop mixture evenly into each cup and press down slightly
Preheat oven to 190°C (375°F)
Bake for 25–30 minutes until golden and crispy on top
Let them cool slightly before removing—they firm up as they set
