Preheat the air fryer: Set it to 375°F (190°C) for 3–4 minutes.
A hot basket helps create a crisp surface quickly.
Prep the bread: Melt the butter or measure the oil. Brush one side of each bread slice lightly but fully. You want a thin, even coat—no puddles.
Season: Sprinkle a tiny pinch of salt over the oiled side.
Add any optional seasonings now if you’re using them.
Arrange in the basket: Place the bread slices oiled-side down in a single layer. Don’t overlap. Brush and season the top side while it’s in the basket.
Air fry, then flip: Cook for 3–4 minutes.
Open, flip each slice, and cook another 2–3 minutes. Thinner bread may be done faster; thicker slices may need another minute.
Check for doneness: You’re looking for deep golden color and crisp edges. If you want darker, add 30–60 seconds more.
Serve right away: Enjoy hot.
Top with eggs, beans, sliced tomatoes, avocado, or a drizzle of honey—whatever you like.