The concoction of marshmallow squeezed between two round graham crackers and dipped in chocolate is normally made in a hand-sized portion.
NASA's oversized treat will be available a slice at a time to visitors Monday to the Kennedy Space Center Visitor Complex in Cape Canaveral.
The anniversary moon pie is 40 inches in diameter, six inches high and weighs 55 pounds. That includes six pounds of chocolate and 14 pounds of marshmallow.
