This stunning overnight French toast is the move for an effortless make-ahead brunch. After you've assembled it and let it chill overnight, all you have to do in the morning is top it with pecans, bake it, and finish it with powdered sugar. Allowing the challah slices to sit overnight in the egg mixture results in evenly soaked bread that remains irresistibly custardy as it bakes, while the top crisps up. Orange zest and tart, juicy cranberries add brightness to the dish, while chopped pecans lend it a nutty crunch. When you serve it, be sure to scoop up the buttery maple syrup sauce on the bottom; it gives this a rich finish. If you'd like, add a touch of bourbon to the egg mixture.