Note: The original recipe can be found on the King Arthur's Website:
Start by creaming the sugar and butter, in a large mixing bowl or mixer
Then add the eggs, mix well.
Blend int eh baking powder, salt, vanilla extract, flour, and milk. Continue to mix after each step. This will be a base for your batter. (It's great if you want to change it out for blueberries at a later date)
Carefully fold in the blueberries.
Mix well, just don't over mix.
Fill your muffin tins (you can use liners) or silicone muffin liners. About 2/3 way filled.
Sprinkle a teaspoon of sugar over the top.
Set the time for 12 minutes at 320 degrees F.
Let cool slightly, before you remove them from the air fryer.
Plate, serve and enjoy!