01 -
Combine quick-cooking rolled oats, 120 ml water, and a pinch of salt in a medium pot over medium-high heat. Stir continuously until the mixture becomes thick, creamy, and most of the water has evaporated.
02 -
Lower the heat to low. Add 80 ml very cold water and the whisked egg to the pot. Whisk vigorously to fully incorporate, ensuring a smooth, custard-like consistency without curdling the egg.
03 -
Remove the pot from heat. Stir in vanilla bean paste or vanilla extract, if using, until evenly distributed.
04 -
Transfer the custard oatmeal to a serving bowl. Add desired fruits, seeds, or preferred toppings before serving.