01 - Arrange three shallow bowls: one with the flour, one with the beaten eggs and milk, and one with the breadcrumbs mixed with garlic powder, onion powder, paprika, salt, and pepper.
02 - Pat the cleaned mushrooms thoroughly dry with paper towels to ensure the breading adheres properly.
03 - Dredge each mushroom in the flour, shaking off any excess to create a light, even coat.
04 - Dip the flour-coated mushrooms into the egg and milk mixture, ensuring an even coating across the entire surface.
05 - Roll each mushroom in the seasoned breadcrumbs, pressing gently so the crumbs adhere firmly to the surface.
06 - Heat the vegetable oil in a deep fryer or heavy-bottomed pot to 350°F (180°C), ensuring the oil reaches a steady temperature before frying.
07 - Fry the breaded mushrooms in batches for 3 to 4 minutes, turning occasionally, until they are golden brown and crispy on all sides.
08 - Remove the fried mushrooms with a slotted spoon and transfer them to a plate lined with paper towels to drain excess oil.
09 - Garnish with freshly chopped parsley if desired and serve immediately while hot alongside your preferred dipping sauce.