Preheat oven to 400 degrees. Line a standard size muffin tin with parchment paper liners and spray each one with nonstick spray for baking.
In a large bowl, mix together flour, sugar, baking powder, baking soda, and salt.
In a small bowl, whisk together buttermilk, oil, eggs, and vanilla extract until smooth.
Gradually mix the buttermilk into the flour mixture, stirring gently and being careful not to overmix.
Gently fold the blueberries into the batter.
Use a large scoop to divide the batter evenly into each muffin well. They will be filled to the very top. Sprinkle generously with sparkling sugar!
Bake at 400 degrees for 22-26 minutes, or until a toothpick inserted into the center of the muffin comes out clean. Cool for 5 minutes in the pan and then transfer to a cooling rack. Store in an airtight container.