In a food processor, combine white fish fillets, fish sauce, and fried onions. Pulse until well blended.
Transfer the mixture to a large bowl. Add, olive oil, milk, cooked green peas, salt, and your choice of spices. Mix until all ingredients are evenly combined.
Divide the mixture into 8 portions and shape them into round patties.
Coat each of them with beaten egg and bread crumbs.
Preheat your air fryer to 400°F (190°C) for about 5 minutes.
Lightly coat each fish cake with additional bread crumbs for extra crispiness.
Place the fish cakes in the air fryer basket, leaving some space between each. Cook for 12-15 minutes, flipping halfway through, until they are golden brown and cooked through.
Remove the fish cakes from the air fryer and let them cool for a few minutes. Serve with your favorite dipping sauce or a squeeze of lemon.
Enjoy your delicious homemade Air Fryer Fish Cakes!