01 -
Preheat the oven to 175°C and line a baking sheet with parchment paper.
02 -
In a mixing bowl, blend the sourdough starter with softened butter until smooth and creamy.
03 -
Add sugar, egg, and vanilla extract to the mixture, mixing thoroughly until fully combined.
04 -
In a separate bowl, whisk together flour, baking soda, and salt. Gradually add this to the wet mixture, stirring until a smooth dough forms.
05 -
Fold heart-shaped sprinkles evenly into the dough.
06 -
Use a tablespoon to place dough portions onto the prepared baking sheet, spacing them approximately 5 cm apart.
07 -
Bake for 10 to 12 minutes until edges are lightly golden. Remove from oven and cool on the baking sheet for several minutes before transferring to a wire rack to cool completely.