Preheat oven to 350 degrees.
In a bowl stir together wet ingredients, combining applesauce, milk, splenda, vanilla, and eggs
In a separate bowl stir together dry ingredients, combining the flour, cinnamon, baking soda, baking powder, and salt.
Add the dry ingredients and blueberries to the wet mixture, stirring only until just combined. Be careful not to over mix, as it can break your berries and cause your muffins to be tough.
Pour batter into a greased muffin tins.
Bake approximately 25 minutes or until a toothpick can be inserted and come out clean