Preheat and prepare

• Preheat the oven to 180°C.
• Grease the donut pan.

Make the batter

• Whisk the flour, sugar, baking powder and salt in a bowl.
• Add the eggs, milk, melted butter, lemon zest and lemon juice and mix until smooth.
• Fold in the blueberries gently.

Bake the donuts

• Fill the donut pan cavities about 3/4 full with the batter.
• Bake until golden and a toothpick comes out clean.

Glaze and finish

• Let the donuts cool on a cooling rack.
• Mix the powdered sugar with a little lemon juice to make a glaze.
• Dip the cooled donuts in the glaze and let it set.