Preheat oven to 350°F (180°C), grease and flour a 6 donut pan.
In a medium bowl whisk together flour, baking powder, baking soda, salt and sugar.
In a medium bowl whisk together egg, milk, yogurt, vanilla and melted butter until smooth.
Mix wet ingredients into dry ingredients, just until smooth, gently fold in blueberries. Fill donut pan and bake 10 minutes. Remove from pan, let cool completely then drizzle with lemon glaze if desired. Enjoy!
LEMON GLAZE
In a small bowl mix together until smooth powder sugar and lemon juice (add a tablespoon at a time to reach desired constituency).
Notes
Can I use cake/pastry flour?
If you prefer you can use cake flour instead of all purpose, it will make the donuts softer and more tender. For every cup of all purpose flour, remove two tablespoons and replace with two tablespoons of corn starch.
Do I Need A Donut Pan?
Not really you can make your own, all you need is a cupcake pan and foil. Cut the foil into 11 inches (30cm) and then cut in half, gently mold the foil around your middle or ring finger. Then gently press the form into the muffin tin. And there you have a donut form to make baked donuts.I always find either with the homemade pan or an actual donut pan that the batter bakes over the hole, all you have to do is recut the hole out with a medium round pastry tip, it gives it a cleaner cut then a knife.
How to store the donuts
Store the baked cooled donuts in an air tight container at room temperature. They will last up to 4 days. They can also be frozen in a freezer safe bag or container. They will keep for up to 2-3 months in the freezer.