Well Made by Kiley

Preheat the oven to 350F. Line a large baking sheet with parchment paper, set aside.
In a small bowl, mix the sugar and cinnamon together for the cinnamon sugar mixture. Set aside.
In a medium bowl, cream the sugar and butter together until light and fluffy.
Then, add in the eggs, sourdough starter, vanilla, and milk. Mix well.
Add in the flour, baking powder, and salt, and beat until just incorporated.
Allow the dough to sit for 5 minutes to slightly firm.
Lightly flour your work surface. Turn the dough out onto the work surface, dust the top with flour and roll out to about 3/4” thick.
Use a round cutter or cup to cut circles (~3” wide), and a smaller cutter to cut out the centers to create a donut shape.
Place the donut cookies onto the prepared baking sheet and lightly brush the tops with melted butter.
Bake at 350F for 18-20 minutes, or until very lightly golden.
Remove and allow to cool for 5 minutes on the pan. Then, brush the tops with a tiny bit of extra butter, and immediately roll in the cinnamon sugar mixture to coat the tops.
Serve warm.
Enjoy!