How to make baked cinnamon donuts

• Mix together the dry ingredients - flour, sugar, baking powder, and cinnamon.
  150 g wheat flour - all-purpose, 70 g sugar, 1.5 teaspoons baking powder, 1 teaspoon ground cinnamon
• Mix the egg with milk and pour into the dry ingredients - mix with a spoon.
  1 egg, 120 ml milk
• Spoon the dough into the donut baking pan - I transferred the dough to a piping bag, cut off the corner, and squeezed the dough into the mold.
• Bake at 170 degrees Celsius (fan mode) for approximately 15 minutes - until a skewer comes out clean.
• After baking, let them cool slightly, then brush the tops of the donuts with melted butter and sprinkle with sugar mixed with cinnamon.
  2-3 tablespoons butter, 3-4 tablespoons sugar, 0.5 teaspoon cinnamon