For the porridge: Tip 200ml water into a small non-stick pan and stir in porridge oats. Cook over a low heat until bubbling and thickened. (To make in a microwave, use a deep container to prevent spillage as the mixture will rise up as it cooks, and cook for 3 mins on High.) Stir in yogurt or swirl in half and top with the rest.
Add pear and walnut halves to the finished porridge, then sprinkle on cinnamon.