Grease pan with butter
Layer bread in the greased pan
Stir eggs, cream, sugar, vanilla seeds, and milk together
Add enough milk to bring the total liquids to 600-700 ml
Pour liquids over the bread
Cover with plastic
Leave overnight in fridge
Bring out (from fridge) to warm up a bit on the bench
If the liquid has disappeared then press down plastic on top
Cook at 180ยบ C until golden brown (~30 minutes)