Preheat the oven to 180°C/350°F/Gas mark 4.
In a pot on the stove, stew plums and blueberries for approximately 10 minutes.
Mix oats, butter, almonds and cinnamon together in a bowl - until it sticks together.
Scoop the plum mixture into a baking dish and top with the oats. Bake in the oven for 5-10 minutes or until golden brown.
Serve with a scoop of greek yoghurt.