Preheat your oven to 190 degrees Celsius.
First put the porridge, oat flakes, baking powder, salt, cinnamon, cocoa powder and hazelnuts in a baking dish.
Next, put the vegetable drink, egg and maple syrup in another bowl and mix well.
Then mix the mixture from the bowl with the dry ingredients.
Finally, place the baking dish in the oven and bake the Baked Porridge for 30 minutes.
After the baking time, you can take the porridge out of the oven, let it cool briefly and then enjoy it.