Posted on May 26, 2019May 26, 2019 This gorgeous casserole with beef and onions is best made the day before. Store the leftovers in the fridge covered, it also freezes well. This gorgeous casserole with beef and onions is best made the day before. Store the leftovers in the fridge covered, it also freezes well. AdvertisementShare this:TwitterFacebookLike this:Like Loading... Related