3 egg yolks
50ml + 700ml milk
5ml ground cinnamon
ground cinnamon and sugar, mixed, for dusting
Add the sugar and cornstarch to a mixing bowl and stir to mix.
Whisk the egg yolks and 50ml milk together and stir into the sugar mixture to make a smooth, runny paste. Set aside.
Add the 700ml milk to a saucepan set over medium-high heat and bring to a boil.
Take the saucepan from the heat and drizzle a thin stream of milk on to the egg mixture while whisking vigorously.
Pour the mixture back into the saucepan, place it over medium-high heat and whisk until thick.
Remove from the heat and stir in the vanilla and cinnamon.
Add the oats to a bowl/glass jar.
Pour the warm mixture over the oats and leave to cool.
Dust with cinnamon-sugar to serve.
The oats may be kept in the refrigerator for 5 days.