Combine the Flour, Sugar and Baking Powder in a large bowl and mix for a minute.
Combine the Egg, Oil and Milk in a different bowl and mix well. Making sure the yolk is scrambled. Mix into the flour, sugar and baking powder. Fold-In the Blueberries. Fill the muffin cups, smooth out the mixture in the tins and sprinkle with a cinnamon and sugar topping mixture.