Spray a 12-inch non-stick pan with cooking spray and heat over medium-high heat.
Combine egg whites, milk, vanilla, and cinnamon and mix well.
Coat each slice of bread evenly on each side with egg white mixture; place in pan and cook for 2-3 minutes on each side, or until golden brown; repeat with remaining bread.
Serve with your favorite syrup or fruit preserves.
Type preparation method here in list style.