Pies, because I'm making pies anyway to optimize the satiety from and lifespan of berries. First winter I've always got a giant pile of berries going into it that will expire long before winter is over, and a significantly smaller pile of grain, so the main order of business is figuring out how to maximize what I get from berries. Juicing reduces their sat instead of increasing it and takes up barrels to store, honey's too hard to come by in quantity and takes up crocks to store, porridge doesn't have as good of a berry-per-grain ratio as pies. Since I'm making pies anyway, there's not much need for something else to cover the grain nutrition.
Now, second year when the fruit trees are producing and I have boatloads of grain and a full container of pears or something that have significant duration by themselves....yeah, then bread might be the plan for the excess grain, though the fruit pies are still on my mind.