While other fast-food outlets are busy promoting their new healthy offerings, Dunkin' Donuts is adding the "Glazed Donut Breakfast Sandwich" to its national menu beginning this Friday.

The sandwich features fried eggs and bacon between a split glazed donut. Dunkin' Donuts test-marketed the concoction in eastern Massachusetts this spring, and it created an online frenzy. The company says "Glazed Donut Breakfast Sandwich" has 360 calories.

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