Make the night before. Just set it out in the morning about 30 minutes prior to baking. By the time everyone is up and moving breakfast will be ready in a flash.
Butter a 9-inch square baking pan. Arrange bread slices overlapping, to fill pan completely. In medium bowl combine eggs, milk, cream, vanilla, cinnamon, and nutmeg; mix well. Pour over bread slices. Cover and refrigerate overnight.
In the morning: Preheat oven to 350 degrees F. In small bowl combine butter, brown sugar, and corn syrup, mixing well. Spread mixture evenly over the bread. Bake 45 to 60 minutes or until puffed and golden brown. Serve with maple syrup.