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Starbucks · Breakfast · United States

Impossible™ Breakfast Sandwich Calories & Nutrition

One serving (150 g) of Impossible™ Breakfast Sandwich from Starbucks has 420 calories, 21g protein, 36g carbs, 22g fat and 4g sugar.

At 21g of protein, this sandwich is a delicious combination of Impossible™ Sausage made from plants, a cage-free fried egg and aged Cheddar cheese on an artisan sesame ciabatta bun.

Key facts

  • Calories

    420 kcal

  • Protein

    21g

  • Carbohydrates

    36g

  • Sodium

    800 mg

It ranks #15 of 18 breakfast from lowest to highest calories, with 25% more calories than the category average of 337 kcal.

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Ingredients & allergens

Allergens:

  • Egg
  • Milk
  • Sesame
  • Soy
  • Tree nuts
  • Wheat

Ingredients

SESAME CIABATTA BUN [ENRICHED WHEAT FLOUR (FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, SESAME SEEDS, EGGS, DURUM WHEAT SEMOLINA, SUGAR, SUNFLOWER OIL, BUTTER (MILK), SALT, PAPRIKA, MALTED BARLEY FLOUR, YEAST, CULTURED WHEAT STARCH, MICROBIAL ENZYMES (AMYLASE)], FRIED EGG PATTY [EGG WHITES, EGG YOLKS, MILK, FOOD STARCH- MODIFIED, SALT, CITRIC ACID], PLANT-BASED BREAKFAST PATTY [WATER, SOY PROTEIN CONCENTRATE, SUNFLOWER OIL, COCONUT OIL, CONTAINS 2% OR LESS OF: CITRIC ACID, CULTURED DEXTROSE, FOOD STARCH – MODIFIED, GARLIC POWDER, METHYLCELLULOSE, MIXED TOCOPHEROLS (VITAMIN E), NATURAL FLAVORS, NIACIN (VITAMIN B3), ONION POWDER, PYRIDOXINE HYDROCHLORIDE (VITAMIN B6), RIBOFLAVIN (VITAMIN B2), SALT, SODIUM ASCORBATE (VITAMIN C), SOY LEGHEMOGLOBIN, SOY PROTEIN ISOLATE, SPICES, VITAMIN B12, YEAST EXTRACT, ZINC GLUCONATE], SHARP CHEDDAR CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, ANNATTO (FOR COLOR)]

Allergens shown in capitals as declared by Starbucks. Recipes change and items are made on shared equipment, so always check in store if you have an allergy.

Lower-calorie alternatives

Impossible™ Breakfast Sandwich: common questions

How many calories are in an Impossible™ Breakfast Sandwich?

One serving (150 g) of Impossible™ Breakfast Sandwich from Starbucks has 420 calories, 21g protein, 36g carbs, 22g fat and 4g sugar. That is 21% of the 2,000 kcal daily value for an average adult.

How much sugar is in Impossible™ Breakfast Sandwich?

4g of total sugars.

Is Impossible™ Breakfast Sandwich dairy-free or vegan?

The standard build contains milk. Starbucks prepares food and drinks on shared equipment, so traces are possible.

Source: Starbucks US menu (starbucks.com/menu, ordering menu JSON used by the site) (retrieved 2026-10-16); Starbucks US product pages: "Full nutrition & ingredients list" (product JSON used by the site) (retrieved 2026-10-16; 264 products, URLs in scripts/data/starbucks-us/raw/manifest.json); Starbucks® At Home (athome.starbucks.com) product pages: Nutrition Facts and ingredients (retrieved 2026-10-16; 157 product pages, URLs in scripts/data/starbucks-us/athome/raw/manifest.json). Data checked 2026-10-16. Starbucks is a trademark of its owner; Fast Food Calc is independent and not affiliated with Starbucks.