Heat the oil to 185 oC in a large pan or deep fryer
Separate the onion into rings
Mix together the flour and baking powder in a bowl
Season with salt and pepper

Dip each of the onion rings into the flour
Whisk the dairy free milk and egg into the remaining flour
Place the breadcrumbs and more seasoning into a small bowl

Dip the floured onion rings into the batter and then into the breadcrumbs
Fry a couple at a time for 3 minutes or until golden and crisp