Preheat oven 375 degrees.
Line muffin pan with paper cups.
In a medium mixing bowl, blend together oats, flour, sugar, baking powder, salt. Set aside.
In a separate bowl, whisk together milk, egg, applesauce and vanilla.
Add liquid to ingredients to dry ingredients, blend well. Fold in blueberries. (if dough seems a little runny- add 1/4 cup more of flour)
Pour an equal amount of batter into each muffin cup. Sprinkle each muffin with cinnamon.
Bake for 20-25 minutes, or until a toothpick comes out clean.
Serve with extra blueberries if you have some.