Over the past few years, however, my idea of sweets has changed dramatically. Long gone are the days that I would reach for a 100-calorie cookie or cake pack. Unsweetened, dark chocolate is high in antioxidants and falls under both the “superfoods” and “good mood foods” categories for me because it has been known to increase serotonin levels in the brain (serotonin is one of our “feel-good” hormones). So, indulge your sweet tooth with one of these guilt-free brownies! They are far healthier for you than any low-calorie snack pack will ever be.