In a skillet on the stove, over medium heat, saute the onion, garlic, hamburger meat and taco seasoning until browned. Be sure and break the meat up into small pieces as you're cooking. Drain fat. Remove from heat and allow to cool.
Lay out your crescent dough sheets and slice into 5 long strips. Then half the long strips into 5 more strips. You will have 10 strips. Use a rolling pin or smooth glass to roll out the dough a little.
Scoop cooled taco mixture onto each dough sheet then top with a slice of cheese.
Fold sides of dough in creating a bread stick, pinching sides to keep ingredients in. Flip over and keep seam side down.
Brush the top of each stick generously with butter or olive oil and sprinkle garlic powder on top.
Place gently in air fryer basket, seam side down.
Set Air Fryer to 370 degrees and cook for 6-8 minutes. (all air fryers are a little different, so be sure to watch, and add time if the dough doesn't seem done yet.) Once you have made these once, each time you will know what the time is to set them on. In my air fryer it's about 6 minutes and they are perfect.