Cheese & Caramelised Onion Toastie: calories and sugar by portion and age

Greggs Cheese & Caramelised Onion Toastie, toastie with melted cheddar and caramelised onion on white paper, nutrition and calories

Boone’s analysis puts Greggs Cheese & Caramelised Onion Toastie at 27% of an adult’s daily calories, 63% of the daily salt limit for a child aged 4 to 6 and 3.8 teaspoons of free sugar.

How many calories are in a Greggs Cheese & Caramelised Onion Toastie? It contains 548 kcal, 18g of fat (11g saturated), 15g of sugar and 1.9g of salt.

Build a full order with our nutrition calculator

Use the Boone calculator to build a full Greggs order rather than view this item on its own. Add a bake or sandwich, a sweet treat and a drink, then choose your age and sex for a more accurate view of how a Cheese & Caramelised Onion Toastie fits into a day.

Nutrition information

Nutrition information: Greggs Cheese & Caramelised Onion Toastie

Energy	548 kcal
Fat	18g
of which saturates	11g
Carbohydrate	69g
of which sugars	15g
Fibre	3.7g
Protein	25g
Salt	1.9g

Nutrition figures are Greggs UK published data (September 2026), per item as sold. Boone converts them to the portion and age comparisons on this page.

Greggs Cheese & Caramelised Onion Toastie contains 548 kcal, which is 27% of the 2,000 kcal adult daily reference intake. It provides 18g of total fat, of which 11g is saturated, 15g of sugar, 3.7g of fibre, 1.9g of salt and 25g of protein.

The saturated fat content of 11g represents 55% of the adult daily guideline of 20g.

Greggs gives the portion size as 208.3g, which works out at 263 kcal per 100g.

Sugar in Greggs Cheese & Caramelised Onion Toastie

Greggs Cheese & Caramelised Onion Toastie contains 15g of free sugar per standard serving (3.8 teaspoons). Greggs publishes a total sugar figure of 15g and none of it is naturally occurring. High sugar

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. Free sugar excludes the sugars naturally present in milk and whole fruit.

Free sugar by portion: Greggs Cheese & Caramelised Onion Toastie

Portion	Adult (female) 30g	Adult (male) 30g	Age 11 to 17 30g	Age 7 to 10 24g	Age 4 to 6 19g
Per portion	15g 50%	15g 50%	15g 50%	15g 62%	15g 79%

Teaspoons: 3.8 tsp

Boone calculates these percentages from Greggs UK published nutrition data against UK Dietary Reference Values and NHS free sugar and salt limits. Free sugar, salt, calories and saturated fat are limits to stay under. For guidance only.

Salt in Greggs Cheese & Caramelised Onion Toastie

Greggs Cheese & Caramelised Onion Toastie contains 1.9g of salt per standard serving. Moderate salt

Children have lower salt limits: 3g per day for ages 4 to 6, 5g for ages 7 to 10.

Salt by portion: Greggs Cheese & Caramelised Onion Toastie

Portion	Adult (female) 6g	Adult (male) 6g	Age 11 to 17 6g	Age 7 to 10 5g	Age 4 to 6 3g
Per portion	1.9g 32%	1.9g 32%	1.9g 32%	1.9g 38%	1.9g 63%

Calories in Greggs Cheese & Caramelised Onion Toastie

Greggs Cheese & Caramelised Onion Toastie contains 548 kcal per standard serving. Moderate calorie share

Daily calorie needs vary by age and sex.

Calories by portion: Greggs Cheese & Caramelised Onion Toastie

Portion	Adult (female) 2000 kcal	Adult (male) 2500 kcal	Age 11 to 17 1936 kcal	Age 7 to 10 1553 kcal	Age 4 to 6 1291 kcal
Per portion	548 kcal 27%	548 kcal 22%	548 kcal 28%	548 kcal 35%	548 kcal 42%

Saturated fat in Greggs Cheese & Caramelised Onion Toastie

Greggs Cheese & Caramelised Onion Toastie contains 11g of saturated fat per standard serving. High saturated fat

The saturated fat guideline is 20g a day for women and 30g for men, and lower for children.

Saturated fat by portion: Greggs Cheese & Caramelised Onion Toastie

Portion	Adult (female) 20g	Adult (male) 30g	Age 11 to 17 20g	Age 7 to 10 18g	Age 4 to 6 16g
Per portion	11g 55%	11g 37%	11g 55%	11g 61%	11g 69%

Free sugar vs total sugar

Where the sugar comes from: Greggs Cheese & Caramelised Onion Toastie

All 15g counts as free sugar. There is no milk or whole fruit in this item, so nothing is deducted. That is 3.8 teaspoons.

NHS daily free sugar limits: 30g for adults and children 11+, 24g age 7 to 10, 19g age 4 to 6.

Ultra-processed food: what is really in it

Processing: Greggs Cheese & Caramelised Onion Toastie

Boone cannot classify this item, because Greggs chooses not to publish an ingredient list for it.

NOVA classification is read from an ingredient list. Without one there is no way to count additives, separate raw ingredients from manufactured ones, or say whether an item is ultra-processed. Boone does not estimate a NOVA group, because a guess presented as a classification would be worse than saying nothing.

Greggs publishes calories, macronutrients, fibre and allergens for its menu. Ingredient lists are the missing piece.

Ingredients

Greggs chooses not to publish an ingredient list

Ingredients: Greggs Cheese & Caramelised Onion Toastie

Greggs does not publish the ingredients in a Greggs Cheese & Caramelised Onion Toastie, and it is under no legal obligation to do so.

Food prepared in a shop and sold loose counts as non-prepacked under UK food law. The legal requirement is to declare the 14 major allergens, and for large businesses in England to show calories at the point of choice. A full ingredient list is voluntary. Some chains publish one anyway. Greggs publishes nutrition and allergens for every item, but not ingredients.

This means no page on this site can tell you how many ingredients are in this item, how many of them are manufactured substances, or whether it is ultra-processed. Boone will not estimate any of it. That absence is Greggs’s decision, not an omission on our part.

Greggs is not unusual in this. UK law lets any business selling food made on the premises skip ingredient labelling entirely, and the chains that publish do so by choice.

Allergen information for this item is published by Greggs and is shown below. Recipes change, so always check in the shop before buying if you have an allergy.

Allergens at a glance

Greggs Cheese & Caramelised Onion Toastie contains wheat, barley, soya, milk and gluten.

Allergen information: Greggs Cheese & Caramelised Onion Toastie

Allergen	Status
Wheat	Contains
Rye	May contain traces
Barley	Contains
Oats	May contain traces
Spelt	May contain traces
Kamut	May contain traces
Peanuts	Not present
Tree nuts	Not present
Sesame	Not present
Soya	Contains
Milk	Contains
Eggs	May contain traces
Fish	May contain traces
Crustaceans	Not present
Molluscs	Not present
Celery	May contain traces
Mustard	May contain traces
Sulphites	May contain traces
Lupin	Not present

Contains = declared as an ingredient. May contain traces = Greggs states the allergen cannot be excluded. Source: Greggs Customer Allergen Information Guide, version 13, 1 October 2026. Greggs prepares much of its food and drink in shop kitchens with shared equipment and cannot guarantee any item is allergen free.

Frequently asked questions

How many calories are in a Greggs Cheese & Caramelised Onion Toastie?+

Boone calculates that a Greggs Cheese & Caramelised Onion Toastie contains 548 kcal, which is 27% of an adult’s 2,000 kcal daily reference intake and 42% of the daily intake for a child aged 4 to 6.

How much sugar is in a Greggs Cheese & Caramelised Onion Toastie?+

A Greggs Cheese & Caramelised Onion Toastie contains 15g of sugar, all of which counts as free sugar, or about 3.8 teaspoons. That is 50% of an adult’s 30g daily limit and 79% of the 19g limit for a child aged 4 to 6.

How much saturated fat is in a Greggs Cheese & Caramelised Onion Toastie?+

A Greggs Cheese & Caramelised Onion Toastie contains 11g of saturated fat. Boone calculates this as 55% of the daily guideline for an adult woman and 37% for an adult man, because the guideline differs by sex: 20g and 30g.

How much salt is in a Greggs Cheese & Caramelised Onion Toastie?+

A Greggs Cheese & Caramelised Onion Toastie contains 1.9g of salt. Boone calculates that as 63% of the daily limit for a child aged 4 to 6 and 32% of an adult’s 6g limit.

Is a Greggs Cheese & Caramelised Onion Toastie ultra-processed?+

Greggs does not publish ingredient lists for food and drink prepared in its shops, and UK law does not require it to, so Boone cannot assign a NOVA group to this item.

Is a Greggs Cheese & Caramelised Onion Toastie classed as less healthy?+

Under the government’s 2018 nutrient profiling model a Greggs Cheese & Caramelised Onion Toastie scores 17. The model classes a food scoring 4 or more as less healthy, so this item would be. The 2018 model is published but not yet used for advertising rules. Greggs publishes fibre, so Boone uses its figure directly.