Step 1 Add 3 cups of milk, sugars and cinnamon sticks to a medium sauce pan on medium-low heat, bring to a light simmerStep 2Use a small bowl to mix cornstarch with remaining milkStep 3Raise the heat to medium-high and add in cornstarch with milk, mixing gently until thickened Step 4Take the pan off the heat and add in butter, mixing gently until well combined Step 5Immediately pour your mix into the serving dish, let cool at room temperature and then refrigerate for 4 hours Step 6 Invert onto a plate, dust with cinnamon and enjoy!