01 -
In a medium saucepan, bring the milk and sugar to a gentle simmer over medium heat.
02 -
Add the rolled oats to the saucepan and cook, stirring occasionally, until tender and the mixture thickens, approximately 5 to 7 minutes.
03 -
In a separate bowl, whisk together the egg, vanilla extract, and cinnamon if using.
04 -
Gradually drizzle a small amount of the hot oatmeal into the egg mixture while whisking constantly to temper the egg.
05 -
Slowly stir the tempered egg mixture back into the saucepan with the oats and continue cooking for 1 to 2 minutes, until the mixture thickens to a custard-like consistency.
06 -
Remove from heat, stir in a pinch of salt, and serve topped with fresh fruit or nuts as desired.