At Dunkin', the Sourdough Breakfast Sandwich is a solid high-protein order. That works out to 4.8g of protein per 100 calories — 13g above the 18g Dunkin' average. Its macros land at roughly 19% of calories from protein, 36% from carbs and 44% from fat. Contains dairy, gluten, eggs, pork.
Source: Dunkin' Nutrition Guide ↗, last verified Jun 17, 2026. Menus change periodically; values may vary by location. How we verify →
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Sourdough Breakfast Sandwich — common questions
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