01 -
Nest a smaller onion ring inside a larger one and fill the gap with sliced mozzarella. Secure with toothpicks.
02 -
Combine flour, baking powder, and salt in a bowl. Dredge the filled onion rings in this dry mixture and set on a wire rack.
03 -
Whisk together milk and beaten egg, then add to the remaining dry mix to form a smooth batter.
04 -
Dip dredged onion rings into the batter, letting excess drip off. Roll them in panko breadcrumbs and return to wire rack.
05 -
Heat oil in a deep pot. Fry the coated rings until golden brown on both sides, turning once. Drain on paper towels.
06 -
Remove toothpicks before serving. Best enjoyed hot with marinara sauce on the side.