Slice the onions into ⅔ inch rings. Reserve the small inside rings for other recipes; you want large rings that are easy to wrap in bacon. Some rings may be small enough to use ½ slice of bacon.
Brush hollandaise over the onion slices. Wrap each onion slice tightly in bacon and use a toothpick to hold in place. Place into the air fryer basket.
Adjust the temperature to 350°F and set the timer for 10 minutes.
When cooked bacon will be crispy. Serve with desired dipping sauce.
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.