Combine eggs, milk, vanilla extract, sugar, and cinnamon in a large but shallow mixing bowl. Whisk well until all the ingredients are combined. Set aside.
Set up an assembly line with bread slices, egg custard mixture, and air fryer basket or tray. Line your air fryer basket or tray with parchment paper.
Take one slice of bread, dip into the egg mixture. Let it soak 3-4 seconds on each side. Let the excess drip back out in the bowl and gently place on to the air fryer basket or tray, in a single layer, without touching each other. Then spray a coating of cooking spray on top of the slices.
Bake at 380°F for 5 minutes, flip, and air fry other side at 380°F again for 3-4 minutes. Actual time might vary based on the air fryer model. So, watch for a nice golden brown color on both sides before you're done.
Serve your air fryer French toast with some maple syrup, a delicious berry compote, and/or some powdered sugar to your liking.
Notes
If you're cooking in batches, wait to soak the bread until you're able to air fry them.
Scale down for one person (use just 1 egg and a couple of tablespoons of milk) or up for a larger family (use slider on the recipe card).
Make sure to not use wax paper and don't line the tray with parchment paper when you're preheating.
To make parchment stick, spray a tiny bit of non-stick spray on the tray and then lay down the parchment paper on top. Then, spray the top of the parchment paper with a non-stick cooking spray