Preheat oven to 350℉.
In a 9 x 13 baking dish, melt ½ a stick of butter in the oven.
Pull crustless bread apart into bite size pieces. Place bread into the baking dish over the melted butter.
In a separate saucepan, melt one stick of butter. Note: Reserving 1 tablespoon.
Pour butter over bread trying to cover all pieces. Let sit and soak up butter. Note: While bread is soaking prepare the sweetpotato cream bath.
In a mini food processor, add 1 cup pureed sweetpotato, 1 tablespoon of reserved melted butter, and 1 tablespoon molasses. Mix well and set aside.
In a bowl, add 1 cup heavy whipping cream, ½ cup whole milk, ½ cup sugar, 1 egg, 3 egg yolks, ½ teaspoon salt, 1 teaspoon vanilla, 1 teaspoon cinnamon, ½ teaspoon ginger, and ½ teaspoon nutmeg. Whisk well and pour over bread. Note: If bread isn’t originally soft and doughy, it needs to sit for about 20 minutes to soak up cream mixture.
Sprinkle top of bread with ½ cup white chocolate chips and press, making sure all the bread is submerged.