Pour flour into a medium shallow bowl. Whisk milk in until fully incorporated.
Whisk remaining ingredients in until smooth.
Heat a griddle or skillet over medium heat and spray with cooking spray.
Soak bread slices in mixture until saturated, flipping each slice to cover both sides. Place each slice onto griddle or skillet and cook until golden brown, flipping once.
Recipe by Simple, Sweet & Savory at https://www.simplesweetsavory.com/amazing-french-toast/