For the breakfast cereal with pumpkin puree and plums, put the chia seeds, flax seeds, oat flakes, spelt bran, almonds and pumpkin puree in a bowl. Cut the plums in half, remove the pit and cut into small pieces.
Also add to the bowl along with the cinnamon. Stir in the plain yogurt and almond milk well to make a moist mixture. Add more yogurt or milk if needed.
Cover with a lid and leave the breakfast cereal with pumpkin puree and plums to swell overnight in the refrigerator.