Butter 13 x 9-inch baking pan. Fill pan with bread slices within 1 ½ inches of top. In blender mix eggs, half-and-half, milk, vanilla, nutmeg, and cinnamon. Pour over bread slices. Refrigerate covered 8 to 10 hours or overnight. Mix topping by combining butter, brown sugar, corn syrup, and nuts. Can store in refrigerator but needs to be room temperature when time to bake. When ready to bake, preheat oven to 350 degrees. Spread topping on bread mixture and bake about 1 hour or, until puffed and golden. Keep testing with a tooth pick. Serve with maple syrup if desired. Yields 8 to 10 servings.