Start by peeling the onions and trimming the top slightly. Carefully cut each onion into a blooming shape by making several downward cuts without slicing through the base. Gently spread the petals apart to create that classic bloom look.
In one bowl, mix flour with paprika, garlic powder, salt, and pepper. In another bowl, whisk together eggs and milk until smooth. Place breadcrumbs in a third bowl to create a three-step coating station.
Dip each onion first into the flour mixture, making sure it gets into all the layers. Then coat it with the egg mixture, followed by breadcrumbs. Press gently so the coating sticks well and evenly.
Preheat your air fryer to 375°F (190°C) for a few minutes. Lightly spray the basket with cooking spray and place the coated onions inside, leaving space between them for proper air circulation.
Spray the onions lightly with cooking spray to help them crisp up. Cook for about 12–15 minutes until they turn golden brown and crispy. Check halfway and adjust placement if needed.
Once done, carefully remove the onions and let them cool slightly. Serve them warm with your favorite dipping sauce for the best flavor and texture.