Preheat your air fryer to 400°F (204°C) for 5 minutes.
Then, prepare the Brussels sprouts. Begin by washing them, trimming the stem, and cutting them in half.
In a large bowl, drizzle the cooking oil over Brussels sprouts. No salt or pepper! Mix by hand to make sure that the vegetables are fully coated with the oil.
Air fry the Brussels sprouts for 12-15 minutes at 400ºF (204ºC). Flip them halfway for an even golden brown finish.
Whilst air frying, make the honey garlic sauce. In a small saucepan, combine the following ingredients: honey, ginger, garlic, soy sauce and red pepper flakes. Bring to a boil, then lower the heat to simmer. Simmer for 15 - 20 minutes or until the sauce thickens. Then, transfer the sauce onto a large bowl.
Coat the Brussels sprouts with honey garlic. After air frying, transfer the air fried sprouts into the large bowl that contains the sauce. Using tongs, toss the Brussels sprouts around to incorporate the honey garlic flavor.
Serve and enjoy your Asian-style Brussels sprouts!