In a small bowl, whisk buttermilk, egg, melted butter, and vanilla extract.
Whisk in flour, baking powder, sugar, and salt. Whisk until smooth. Fold in blueberries.
Preheat a cooking pan over medium heat. Add a little oil to the pan.
You can make one or two pancakes.
Cook the pancakes, in the preheated pan, for a couple of minutes on each side. Check the pancakes by pressing lightly in the center, if it's firm the pancakes are done.