Store your baked chocolate chip brioche bread in an airtight container at room temperature for 2-3 days. To freeze, wait until the brioche has cooled to room temperature.
Leave the brioche in a warm place to rise for one hour. Preheat the oven to 200C/400F/Gas 6. Brush the brioche with the egg wash and bake for 20 minutes, or until golden-brown.
Generously grease a shallow ovenproof dish, about 28cm/11in in diameter. Arrange the brioche in the dish to cover the base, filling in all the gaps, but do not overlap the slices. Put the butter ...