Split the vanilla pod in half and scrape the seeds.
On medium heat in a medium saucepan heat, milk + cream + vanilla seeds + vanilla pod. Right when it comes to a simmer take off the heat. Let the vanilla pod and seeds steep in the milk and cream for 10 minutes.
While the milk and cream are steeping, In a small bowl mix together sugar and cornstarch. Set aside.
In a medium bowl add your egg yolks and whisk to break them up.
Add in sugar and cornstarch, whisk together well. The mixture should be lighter in color with no lumps. If you did not use a vanilla pod, this is the time to add in your vanilla extract. Please try and source real vanilla extract, in a vanilla custard this is where most of the flavor comes from.
After the milk and cream have steeped, we need to temper the eggs. To do this, add a cup of the warm milk and cream in a steady stream into the egg mixture while whisking. Continue adding a cup at a time while you whisk until your milk and cream is done.
Pass the mixture through a strainer back into the same pot the milk and cream were in, discards the vanilla pod.
Place the pan back on the stove and on medium-low heat gently whisk the mixture until it starts to thicken. Continue whisking until your mixture has reached a pudding consistency (ours took about 5-6 minutes).
Remove from heat and let cool slightly. Cover the custard with cling film making sure to press it down directly on top of the custard so we do not get a skin. Place in the fridge while we make the caramelized bread.