Heat up your griddle or skillet and spray with cooking spray every time you re-apply more bread. Slice loaf into 1 inch thick slices (you should have about 6-8 slices. Beat eggs, sugar, vanilla, and cinnamon until smooth. Dip bread in egg mixture and put on skillet. Immediately sprinkle with brown sugar and flip and sprinkle again on the other side. Let them cook until done and keep in a warmer until ready to serve. They should have a layer of crispy brown sugar on each side. It will look like caramel! Serve with maple syrup!