Sourdough Cinnamon Roll Focaccia

Ainekset

350g warm water

100g starter

500g flour

8g salt

BROWN SUGAR CINNAMON MIXTURE:

60g softened butter

3/4 cup brown sugar

1 tbsp cinnamon

BURBON VANILLA BEAN ICING:

1 cup powdered sugar

1 teaspoon vanilla bean paste

3 tbsp milk

425 for 25 minutes