01 -
Set your oven temperature to 350°F (or 180°C) and wait for it to heat up.
02 -
In a big bowl, combine oats, flour, sugar, cinnamon, baking powder, and seeds.
03 -
Cube the butter, then stir it and the sourdough starter into the dry mix. Blend everything until smooth.
04 -
Roll the dough into about 22 small balls. Put them on a baking sheet, leaving space in between. Press each ball down gently with your hand.
05 -
If you're using chocolate chips, sprinkle some on top now.
06 -
Let them bake for 12 minutes or so, until the edges turn lightly golden. Once the cookies look crispy, they're done!