Every two weeks or so I put split fryer breasts in my big roaster at 250º for about 4 hours or so. I put two or three big pieces in a ziplock freezer bag and have great tasting pre cooked chicken to use all during the week. It's a real time saver. When I make a pot pie I make filling for two and freeze one filling for later. I make a big pot of chicken and dumpling and freeze quart jars of it. Glass mason jars freeze fine. I keep them on the door rack of my freezer. Don't fill all the way to the top. LOL