Preheat oven to 350 degrees.
Combine flour, baking powder, soda and salt, stirring with a whisk, set aside.
Combine yogurt and milk, set aside.
Beat together granulated sugar and butter with a mixer until well blended.
Add vanilla and eggs.
Add flour mixture and yogurt mixture alternately to the mixing bowl and mix after each addition.
Spoon half of the batter into a 9-inch round baking dish (coated with cooking spray). Add half of the blueberries. Add the rest of the batter. Top with the other half of the blueberries and sprinkle turbinado sugar on top.
Bake at 350 degrees for 50-60 minutes.