Coeliac shoppers seeking a small snack
Start with gluten-free suitability, then compare the calories in the individual bar you would eat. A smaller calorie figure cannot make a bar containing gluten suitable.
Who is this for?
Coeliac shoppers considering a protein bar
A protein bar or flapjack may suit a different snack occasion, but compare its full portion with a smaller fruit bar. Check peanut, nut, milk and soya information separately from its gluten-free claim.
Shoppers switching from mainstream cereal bars
Do not judge a rice- or oat-based bar by its name. Kellogg’s lists barley malt extract and wheat gluten in its Rice Krispies Snack Bar despite its 83 kcal per-bar declaration.
What should you check?
Check suitability on the current pack first, then compare the nutrition for the portion you expect to eat.
| Priority | What to check | Your needs |
|---|---|---|
| Gluten-free suitability | Look for a current gluten-free claim and read the ingredients and allergen statement. The Food Standards Agency states that food labelled gluten-free must contain no more than 20 mg/kg gluten as sold. | I need a bar suitable for a gluten-free diet before its calorie figure is relevant. |
| Calories per bar | Compare kcal for the whole bar and note its weight, rather than comparing figures for different portion sizes as though they were alike. Sainsbury’s lists 86 kcal per 25 g Eat Natural Apple Soft Fruit Bar; Nature Valley UK lists 195 kcal per 40 g Protein Peanut & Chocolate bar. | A smaller snack portion matters to me, so I want to know the calories in the bar I will actually eat. |
| Other allergens | Read the full ingredients and precautionary allergen wording for the exact flavour and pack. Gluten-free does not tell you whether a bar contains nuts, peanuts, milk or soya. | Even if the gluten-free claim suits me, other ingredients or allergen warnings may affect my choice. |
| Snack format | Compare the stated protein and portion size if considering a protein bar or flapjack. Nature Valley UK lists around 10 g protein per 40 g Peanut & Chocolate bar; TREK lists 9.5 g per 50 g Salted Caramel flapjack. | For some snack occasions I may prefer a larger protein bar, while for others I want a smaller portion. |
Common buying mistakes
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Choosing the lowest calorie figure first
Kellogg’s lists its Rice Krispies Snack Bar at 83 kcal per 20 g bar, but its ingredients include barley malt extract and wheat gluten. The calorie figure does not make that product suitable for coeliac shopping.
Check the current gluten-free claim and ingredients before comparing kcal per bar among suitable options.
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Assuming every oat bar is gluten-free
Oat ingredients alone do not establish whether a particular bar is suitable. TREK describes its Salted Caramel flapjack as made with gluten-free oats and labels that product gluten-free.
Check the claim on the exact oat bar and flavour you intend to buy, rather than relying on the wider range or the word ‘oat’.
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Equating a protein bar with a small-calorie portion
Nature Valley UK declares 195 kcal for its 40 g gluten-free Protein Peanut & Chocolate bar, while TREK declares 224 kcal for its 50 g gluten-free Salted Caramel flapjack. Sainsbury’s lists 86 kcal for the reviewed 25 g Eat Natural Apple fruit bar.
Compare whole-bar portions and choose a protein bar or flapjack when its format and stated protein matter more to you than a smaller calorie figure.
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Stopping at the gluten-free claim
The reviewed gluten-free fruit, nut and protein bars also have other ingredients and allergen warnings that may matter, including nuts, peanuts, milk and soya.
Read the complete statement on the current pack, particularly when changing flavour or pack size.
Brand and product references
These examples refer to particular bars or ranges, not to every product made by each brand.
Eat Natural
Eat Natural lists a gluten-free range. Sainsbury’s describes its Apple Soft Fruit Bar as gluten-free and lists nutrition for a 25 g bar.
- The reviewed Apple bar declares 86 kcal per bar.
- It also declares 13.8 g sugars per bar; compare the full nutrition and allergen panel.
Nature Valley
Nature Valley UK labels its Protein Peanut & Chocolate bar gluten-free and lists nutrition for a 40 g bar.
- The reviewed bar provides around 10 g protein and around 4 g fibre.
- It declares 195 kcal per bar; check its peanut, milk, soya and tree-nut information.
TREK
TREK describes its Salted Caramel flapjack as vegan, gluten-free and made with gluten-free oats.
- The reviewed 50 g bar lists 9.5 g protein.
- It declares 224 kcal per bar; check the current pack for its precautionary allergen wording.
Kellogg’s
Kellogg’s Rice Krispies Snack Bar shows why a familiar cereal name or small portion is not enough to establish gluten-free suitability.
- Kellogg’s lists a 20 g bar with a declared 83 kcal.
- That specific bar lists barley malt extract and wheat gluten, so it is not a coeliac-compatible choice.
Graze
Graze describes its Oat Boost flapjacks as oat-based snacks; a brand-level description does not establish gluten-free suitability for an individual bar.
- Check the current claim, ingredients and allergen statement on the exact Graze product before considering it for coeliac shopping.
Joybuy product options
These Joybuy options include fruit-and-nut bars and a protein cereal bar. Check each current pack’s gluten-free claim, portion information and allergens against your needs.
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Nakd Blueberry Muffin Raw Fruit & Nut Bars, 4 x 35 g
For a fruit-and-nut snack, check the current gluten-free claim and calories for one 35 g bar. Read the nut and other allergen information before choosing.
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Nature Valley Protein Peanut & Chocolate Cereal Bars, 8 x 40 g
For a protein-focused snack, Nature Valley UK labels this bar gluten-free and declares around 10 g protein and 195 kcal per 40 g bar. Check the current pack’s peanut, milk, soya and tree-nut information.
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Eat Natural Cashew & Blueberry Fruit & Nut Bars, 3 x 40 g
For a fruit-and-nut option, compare the calories for one 40 g bar with the portion you want. Check this flavour’s current gluten-free claim and its nut, milk and other allergen information.
Questions about choosing cereal bars
What does ‘gluten-free’ mean on a UK cereal-bar label?
The Food Standards Agency states that food labelled gluten-free must contain no more than 20 mg/kg gluten as sold to the consumer. Check the current bar’s label for that claim and read its other allergen information too.
Is a rice-based bar suitable if its name does not mention wheat?
Not necessarily. Coeliac UK advises reading the ingredients and allergen information; Kellogg’s Rice Krispies Snack Bar, for example, lists barley malt extract and wheat gluten.
What if a bar has no gluten-free claim but says ‘may contain’ cereals containing gluten?
Do not assume it is suitable. Coeliac UK’s gluten-free checklist advises checking that a product without a gluten-free claim has no precautionary allergen statement for cereals containing gluten; seek clarification or choose a more clearly labelled product.
Is an 86 kcal bar automatically the right choice?
No. Sainsbury’s lists the gluten-free Eat Natural Apple Soft Fruit Bar at 86 kcal per 25 g bar, but it also declares 13.8 g sugars per bar. Compare the full portion information and ingredients with what matters for your snack.
Should I check the pack if I have read the product listing?
Yes. Use a listing to compare options, then confirm the gluten-free claim, ingredients, allergens and nutrition on the current physical pack, especially if you choose another flavour or pack size.