Slice bread into 1 1/2 slices. Arrange bread slices tightly together in a greased 9 x 13 baking dish. Beat eggs, 1/2 cup sugar, milk, and vanilla with a wire whisk until blended. Pour half of the mixture over bread. Peel, core, and slice apples. Put apples over bread to cover. Pour remaining egg mixture over apples. Combine remaining 1/2 cup sugar, cinnamon and nutmeg; sprinkle over apples. Dot with butter and chill at least 8 hours. Bake uncovered at 350 degrees for 1 hour. Remove from oven and let stand 5 to 10 minutes. Cut into squares and serve with syrup and whipped cream.