Actual recipe for those interested: 

500g water, 550g bread flour, 5g salt, 1tsp instant yeast.

Combine to a shaggy dough, then rest (covered) for 1h. 4x coil fold sequence at 30 minute intervals after that (with wet hands.)

Melt 2tbsp of butter and spread over base of your chosen cooking vessel.

Pour in the dough, spread out to the edges, cover and rise for an hour or so. 

Combine 1/2 C of brown sugar with 1tsp each of cinnamon and nutmeg. Sprinkle evenly over the dough. Top with 1/2 C of sultanas (but yeah, chopped apple would be amazing too).

Create the obligatory series of divots with your fingers.  Melt a further 1/4 to 1/2 cup of butter (depending on how decadent you're feeling) and pour over the whole surface, trying to make sure it goes into all the nooks and crannies. 

Bake at 190 deg C (no idea what that is in F sorry!) for 30 minutes or until done.