Step 1

If baking in the oven, position a rack in the middle and preheat to 350 degrees. If using the air fryer, set to 330 degrees and preheat until the appliance signals it’s ready.

Step 2

In a small bowl, whisk together the oil and butter.

Step 3

Brush one side of each bagel slice with the oil-butter mixture and set on a large, rimmed baking sheet (it sounds fiddly, but this ensures more even coverage than if you tossed everything together in a bowl). Season with half of the salt and some of the everything spice, if using. Flip the slices over and repeat the brushing, then season with the remaining salt and more everything spice. Be sure the slices are in a single layer with as little overlap as possible.

Step 4

If using the oven, bake for 12 to 18 minutes, or until the chips are crisp and golden, or they have reached your desired level of crunch (they will get a bit harder as they cool). Halfway through baking, rotate the pan from front to back and stir the chips. Stale bagels will be done on the lower end of the range, while fresh ones will take longer.

Step 5

If using the air fryer, transfer the coated and salted bagel slices to the air fryer basket and bake for 13 to 16 minutes, or until crisp and golden, stirring the chips two or three times during baking.

Step 6

Let the chips cool completely before serving or storing.