01 -
Turn on your oven to 400°F (200°C) and line a baking tray with parchment paper. Add a light coating of olive oil to keep things from sticking.
02 -
Stir the flour, salt, and pepper together in one big bowl. In a different bowl, combine eggs and milk until they're well blended.
03 -
Start by dipping each onion slice into the flour combo. After that, dunk it in the egg blend, then cover it with a mix of breadcrumbs, cheddar cheese, and Parmesan.
04 -
Lay the onion slices on the prepared baking tray without overlapping them. Drizzle a little olive oil on top to make them extra crispy. Bake for about 20 to 25 minutes, or until they turn golden and crunchy.
05 -
Take the onions out of the oven and sprinkle parsley on top for a fresh look. Serve them hot and dig into their cheesy, comforting crunch.