Have you ever wondered why some unfrosted Pop-Tarts have more calories than frosted? A single Kellogg's Frosted Strawberry Pop-Tart has 200 calories, while an Unfrosted Strawberry Pop-Tart has 210 calories. Not many people realized this odd fact until Spencer Gaffney wrote a viral blog post for the University Press Club in 2009. The post hit Reddit, and users speculated over the nutritional information of the Pop-Tarts. Comment from discussion TIL Unfrosted Pop-tarts have more calories than frosted Pop-tarts.