- In the bowl of a stand mixer using the dough hook, mix together the flour, butter and sugar (if using) for 2 -3 minutes. 
- Add in the sourdough discard, banana puree, milk and vanilla extract. Knead for 10 minutes on medium speed. The dough should be smooth and stretchy at this point. 
- Transfer the dough to a lightly greased bowl and cover with a damp cloth. Leave for 6-8 hours (maximum of 8 hours) at room temperature or until doubled in size. 
- Punch down the risen dough and tranfer to a lightly floured work surface. Now, roll the dough out into a rough rectanglular shape - doesn't have to be perfect. 
- Using a pastry brush, spread your cinnamon roll filling (see instructions below) and layer on some sliced dried figs (optional). 
- Use both hands to roll the dough into a log, then cut 2-3cm wide pieces off the log to form little rolls. Arrange into a baking dish and leave to proof in the fridge for an hour before baking.  
- Bake at 180°C for 30-35 minutes or until groden brown.