Spray a rectangular baking dish with non-stick spray.

Heat the oven to 180C (fan).

Make the blueberry compote by combining all of the ingredients in a small saucepan and heating until simmering. Smash the blueberries into the liquid and simmer about 5 minutes until it thickens and then set aside.

Make the oatmeal batter by mixing the egg, vanilla, banana and milk in a medium bowl.

Tip in oats, cinnamon, salt and baking powder. Mix to combine.

Pour half of the porridge mix in the baking dish.

Pour the blueberry compote over the porridge.

Top with remaining porridge mix.

If desired, using a knife, you can swirl the blueberry compote into the porridge.

Bake for 20 minutes until edges are brown and skewer comes out clean.

Serve hot, warm or cold with a splash of milk, a dollop of yoghurt or maple syrup.