Spread butter around the inside of a 9x13 baking dish and place the cubed up cake inside.
Custard instructions
For the custard, in a mixing bowl, add sugar, milk, heavy cream and eggs. Whisk the ingredients together and pour over the Panettone.
Bake instructions
Set the grill to 350 degrees on indirect heat. Oven temperatures are the same.
Bake for about 1 hour. To ensure a cooked through bread pudding do a toothpick test by inserting into the center and removing clear.
Peanut butter Whiskey Sauce instructions
In a saucepan, add Skreball whiskey, sugar, heavy cream, milk and melted butter. Bring the ingredients to a boil constantly whisking. Then let it simmer until the sauce thickens.