How do I prepare Beecher's Frozen Sides? Emily August 16, 2021 23:31 Follow Instructions for heating each of our frozen sides can be found here. Remember to keep frozen until ready to bake and to always preheat your oven. Related articles How long will my Beecher's Cheese last? Is Beecher's "World's Best" Mac & Cheese certified peanut and/or nut free? How can I contact the Beecher's team? What is the best way to store/reheat leftover "World's Best" Mac and Cheese? Are the enzymes/rennet in Beecher's products vegetarian? Comments 0 comments Article is closed for comments.