This halloween, for a limited time only... Monster cereals are back! Add a little spooky-fun to your day with Boo Berry Cereal. Whether served alone, with milk, yogurt, and/or your favourite berries and nuts, this is a great cereal that can be part of a complete meal. Create a trail mix by adding nuts and dried fruit or take a twist on the traditional snack bar and mix cereal with melted marshmallows.