Put the oats, milk, 450ml water and cinnamon in a pan. Bring to the boil, then turn the heat to low, stirring often, for 5 mins until thickened.

Meanwhile, put the bananas in a dish with the orange zest and juice. Cover and microwave on high for 1 1/2-2 mins until softened. Tip the porridge into bowls and top with the yogurt, banana and seeds.