Mix 2 cups of whole milk, 1 cup of sugar and a cinnamon stick (or powder) over a gentle heat until the sugar has dissolved.
Slice your croissants into thirds and dip into the cinnamon milk.
Place on a lined baking tray and put another layer of baking paper on top.
Place another baking tray on top and press down to flatten.
Put in a preheated oven of 200C for 15-20mins until golden and crispy.
Sprinkle with a sugar and cinnamon powder mix.
