For a richer flavor, use challah bread instead of brioche. Experiment with different flavored coffee creamers to create unique flavor profiles. Vanilla, hazelnut, or caramel are all excellent choices. If you don't have an air fryer, you can bake the French toast in a preheated oven at 375 degrees F (190 degrees C) for 10-12 minutes, flipping halfway through. Ensure the bread slices do not overlap in the air fryer basket to promote even cooking and maximum crispness.