Grease a 9 x 13″ baking dish with butter and set aside.
In a medium saucepan, melt the butter over medium heat. Stir in the brown sugar and maple syrup.
1 stick butter, 1 cup brown sugar, 2 tablespoon maple syrup
Bring the mixture to a boil, stirring constantly.
Remove from heat and pour into prepared baking dish.
Arrange half the bread cubes over the brown sugar mixture.
1 loaf Challa bread
Sprinkle half of the fresh cranberries over the bread.
1 cup cranberries
Place the remaining bread cubes into the dish.
In a large bowl, whisk the eggs and mix in the Egg Nog, cinnamon, nutmeg and vanilla extract.
1 teaspoon cinnamon, ½ teaspoon nutmeg, 8 eggs, 2 cups egg nog, 1 teaspoon vanilla extract
Evenly pour the custard mixture over the bread cubes.
Gently press down on the bread to make sure it’s all coated.
Sprinkle the remaining cranberries over the top of the dish.
1 cup cranberries
Tightly cover baking dish with aluminum foil and refrigerate overnight, at least 8 hours.