Cut each bread slice into three sticks.

Whisk the eggs, milk, vanilla, cinnamon, and sugar in a shallow bowl.

Dip sticks to coat both sides without soaking.

Heat a sprayed skillet over medium heat. Cook sticks 2 to 3 minutes per side until golden.

Cool completely; freeze on a baking sheet for 1 hour.

Transfer to a freezer bag. Reheat in a toaster oven or air fryer until warm.