In a small saucepan, heat up the oat milk until it comes to a boil.
In a separate bowl, mix cornflour with sugar and a pinch of salt.
Mix the dry ingredients with the hot oat milk, whisking continuously until it reaches a smooth consistency.
In a separate bowl, beat the eggs. Add vanilla extract to the beaten eggs and mix together.
Gradually add the egg mixture to the oat milk, whisking continuously until all of the ingredients are fully incorporated.
Pour the custard into individual dishes and refrigerate for at least 2 hours before serving.