Preheat your air fryer to around 350°F (175°C) for a few minutes.
Place the slices of French toast in a single layer in the air fryer basket or tray. Make sure to leave some space between the slices for proper air circulation.
Depending on the thickness of the French toast slices, you'll need to adjust the reheating time. Typically, it takes about 3-5 minutes. However, it's important to monitor the toast closely to avoid burning.
After a few minutes, gently flip the French toast slices over using tongs or a spatula. This allows both sides to heat evenly and ensures a crispy texture throughout.
Continue reheating the French toast for another 2-3 minutes or until it reaches your desired level of warmth and crispness. Remember to keep an eye on it to prevent overcooking.
Once reheated, remove the French toast from the air fryer and serve it immediately. You can add your favorite toppings, such as syrup, fresh fruit, or a sprinkle of powdered sugar for added flavor.