Add water and milk, mix well with the oats and blueberries.
Bring the mixture to a boil, then reduce the heat to medium and cook the oats for about 2 minutes until the oats is almost cooked. Make sure to stir in between so the oats won't get burnt at the bottom of the pan.
Add honey (or pure fresh maple syrup or sugar), vanilla extract and cinnamon powder, mix well.
Continue cooking the oats & blueberries for another couple of minutes until the oats is soft and the blueberries also turn soft.
You may add a few more fresh blueberries (washed well) to the pan if you wish and stir well to combine with the oats, so the oats will have the flavor of fresh blueberries as well.
For more blueberry flavor, you can mash some of the blueberries with a large spoon so the blueberry flavor will blend with the oats easily.
Also add some fresh cream to the oatmeal, mix everything well to combine and serve the delicious blueberry oatmeal warm!