Starbucks Blueberry Crumble Croissant Bun contains 388 kcal per bun — 19% of the adult 2,000 kcal daily reference intake, 25% for a child aged 7 to 10, and 30% for a child aged 4 to 6. It is one of the higher calorie pastry options at Starbucks — above the Butter Croissant at 259 kcal and the Plain au Chocolat at 297 kcal but below the Almond Croissant at 425 kcal and the All Butter Croissant Bun. The combination of enriched croissant-style dough, blueberry filling and buttery crumble topping drives the higher calorie count compared to plain croissants.

Per bun: 388 kcal, 19g fat (11g saturated), 48g carbohydrate (20g sugar), 6.1g protein, 0.49g salt. The saturated fat at 11g is 55% of the adult daily guideline of 20g. The sugar at 20g is 67% of the adult daily free sugar limit of 30g. The salt at 0.49g is 8% of the adult daily limit of 6g.

Starbucks Blueberry Crumble Croissant Bun contains 20g of sugar per bun — 5 teaspoons and 67% of the adult daily free sugar limit of 30g. For a child aged 4 to 6, this uses 105% of their daily free sugar limit — just over their entire daily allowance from a single pastry. For a child aged 7 to 10, it uses 83% of their 24g daily limit. The sugar comes from the blueberry filling — commercial blueberry compote is typically sweetened with added sugar — the crumble topping which contains sugar and butter, and the small amount of sugar in the croissant-style dough. The NHS free sugar limit is 30g per day for adults, 24g for children aged 7 to 10, and 19g for children aged 4 to 6.

Starbucks Blueberry Crumble Croissant Bun contains 0.49g of salt per bun — 8% of the adult daily limit of 6g and 16% of the daily limit for a child aged 4 to 6. The salt comes from the butter in the laminated croissant-style dough and the salt used in the dough and crumble topping. It is low in salt and not a significant nutritional concern.

Starbucks Blueberry Crumble Croissant Bun contains 11g of saturated fat per bun — 55% of the adult daily guideline of 20g and 69% for a child aged 4 to 6. The saturated fat comes from the butter laminated into the croissant-style dough and the additional butter in the crumble topping. The crumble adds an extra layer of butter fat beyond the plain croissant base — accounting for why the saturated fat at 11g is above the plain Butter Croissant at 9g and the All Butter Croissant at 10g.

Starbucks Blueberry Crumble Croissant Bun contains 6.1g of protein per bun — 12% of the adult daily reference intake of 50g. The protein comes from the flour and eggs in the croissant-style dough and the flour in the crumble topping. The blueberry filling contributes minimal protein. At 6.1g for 388 kcal the protein-to-calorie ratio is low and typical of butter-laminated pastry products.

Yes. NOVA 4, ultra-processed. The croissant-style dough contains emulsifiers and dough conditioners. The blueberry filling is a commercial compote or sauce containing glucose syrup and pectin as a gelling agent. The crumble topping contains modified starch. These industrial additives across the dough, filling and topping determine the NOVA 4 classification despite the blueberry and crumble format appearing more artisan than standard bakery items.

Starbucks Blueberry Crumble Croissant Bun contains wheat/gluten, milk, egg and soya as declared allergens — four allergens. The wheat comes from the flour in the croissant dough and crumble topping. The milk comes from the butter in both the dough and crumble. The egg comes from the eggs in the dough and egg wash on the exterior. The soya comes from emulsifiers in the commercial dough recipe. It does not contain peanuts, tree nuts, fish, shellfish, celery, mustard, sesame, lupin or molluscs. Always tell your barista if you have a severe allergy before ordering.

Yes. Starbucks Blueberry Crumble Croissant Bun is suitable for vegetarians. It contains no meat or fish. It is not suitable for vegans as it contains butter, eggs and milk. With no tree nut allergen it is more accessible on allergen grounds than the Almond Croissant.

At 20g of sugar — 105% of the daily free sugar limit for a child aged 4 to 6 — the Blueberry Crumble Croissant Bun just exceeds the child's entire daily free sugar allowance in a single item. The 11g saturated fat uses 69% of their daily guideline. Salt at 0.49g is low at 16% of their daily limit. Four allergens with no tree nuts. Despite the blueberry fruit content, the sweetened compote filling and buttery crumble topping push the sugar above the child's daily free sugar limit. Not appropriate as a regular choice for younger children.

The Blueberry Crumble Croissant Bun contains 388 kcal versus 425 kcal in the Almond Croissant — 37 fewer calories. Sugar is higher at 20g versus 15g — the blueberry compote adds more sugar than the almond frangipane. Saturated fat is lower at 11g versus 12g. Protein is lower at 6.1g versus 10g — the almond frangipane drives the Almond Croissant's higher protein. The Blueberry has four allergens versus five in the Almond Croissant — no tree nuts. For lower calories, fewer allergens and no tree nuts the Blueberry Crumble is the better choice. For higher protein the Almond Croissant leads.

At 20g of sugar the Blueberry Crumble Croissant Bun uses 67% of the adult daily free sugar limit before any drink is added. A plain Cappuccino or Flat White adds 9-12g from milk, bringing the total to 29-32g — right at or just over the adult daily limit. A Caramel Macchiato adds 23g, bringing the total to 43g. A Grande Caramel Frappuccino at 48g takes the total to 68g. An unsweetened Americano or herbal tea at zero sugar keeps the combined total at 20g — well within the adult daily limit. The Blueberry Crumble Croissant Bun is one of the few filled sweet pastries at Starbucks where an unsweetened drink keeps the total comfortably within the daily limit.

Starbucks Blueberry Crumble Croissant Bun sits in the mid-range of the Starbucks sweet pastry selection at 388 kcal and 20g sugar. At 11g saturated fat it is above the plain croissants but below the Almond Croissant. Four declared allergens with no tree nuts. It is suitable for vegetarians but not vegans. The blueberry and crumble combination gives it a distinctive format — a filled, topped croissant-style bun rather than a plain or simply twisted pastry — which sets it apart from the rest of the Starbucks pastry range. For those wanting a fruit-filled croissant-style pastry at Starbucks, it is the only option — lower in calories and with a simpler allergen profile than the Almond Croissant, and with a sweet fruit filling that distinguishes it from the Pain au Raisin.