Add all the ingredients (except the bread) to a medium-sized bowl or shallow dish. Whisk until smooth. Heat a griddle to 350°F. Lightly grease with oil or nonstick cooking spray.
Dunk a slice of bread in the French toast mixture, covering each side. Gently wipe/shake off any excess batter.
Grill for 2-4 minutes on one side until golden, then flip and continue frying on the second side until both sides are golden and the bread begins to puff.