A few years back , I shopped at " When Pigs Fly Bakery" up in Maine.
All different kinds of breads you can Imagine.
I bought a bunch myself, but also had a bunch of Unique Breads sent to my dad.
One of the options was to have the bread " Par-Baked" in which Im assuming it was baked to a certain point, than frozen. When You get it, you keep it in the freezer until ready to complete the baking process.
Im not sure how they did it, of what they wrap it up with, but Im just writing this that Par Baking is an option.