01 -
Preheat oven to 350°F. Spray donut pan wells thoroughly with non-stick cooking spray.
02 -
Whisk together flour, baking powder, and salt in a large bowl.
03 -
Combine milk, sugar, egg, melted butter, lemon juice, zest, and vanilla in separate bowl until well mixed.
04 -
Add dry ingredients to wet ingredients, mixing just until combined. Gently fold in blueberries.
05 -
Distribute batter evenly among 8 donut cavities using piping bag or spoon.
06 -
Bake 9-10 minutes until toothpick comes out clean. Cool 10 minutes in pan, then transfer to wire rack.
07 -
Whisk powdered sugar and lemon juice until smooth, adjusting consistency as needed.
08 -
Place foil under cooling rack, dip each donut in glaze, and let set before serving.