Sonic Peppermint Brownie Bark Shakes contain between 420-1380 calories, depending on your choice of size. The size with the fewest calories is the Mini Peppermint Brownie Bark Shake (420 calories), while the Large Peppermint Brownie Bark Shake contains the most calories (1380 calories).
Choose from the sizes below to see the full nutrition facts, ingredients and allergen information.
