Place the milk and sugar in a small saucepan over low heat and stir until the sugar dissolves.
Remove from heat and transfer to the fridge.
Once the milk mixture has cooled, add the eggs and vanilla bean paste and blend until well combined.
Slice the bread in half lengthways and place on the bottom of a dish or container in a single layer.
Pour the egg mixture over the bread, ensuring all pieces are equally immersed, and transfer to the fridge to soak for 12-24 hours.
Halfway through the refrigeration time, use a spatula to turn the pieces over, taking care as the bread will be very soft.
Before cooking, carefully remove the bread from the egg mixture and place on a cake rack over a tray to drain well.
In a large non-stick frying pan with a lid, melt the butter over medium heat, ensuring the entire surface of the pan is coated.
Add the bread, reduce the heat to low, cover and cook for 3-5 minutes.
Turn the French toast with a spatula, cover again and continue cooking for another 3-5 minutes, or until the centre of the bread is hot and both sides are golden brown and crisp.
Transfer the French toast to a warm plate and serve with seasonal fruit, maple syrup and butter.