I do not believe there is any way to get Norway’s School Bread shipped home from Epcot. I know that you can get merchandise that you saw in the parks but did not pick up for whatever reason, but nothing food related. If you are a baker you could try your hand at making them at home. I was able to easily find the recipe for that particular item online, just google it!
You could try contacting one of the Disney personal shopping services… Kellypds.com is one I am aware of.