Hosts serving guests with different dietary needs
Choose varieties whose exact ingredients and allergens guests can identify. Keep wrappers or pack information available rather than putting unlabelled bars together in a shared bowl.
Who are the bars for?
Guests looking for a plant-based protein bar
Check both the dietary label and protein per bar. TREK describes its protein flapjacks as vegan and gluten-free with 9g plant protein; Tesco lists 7.2g protein per 45g bar for Nakd Cocoa Hazelnut, which is labelled suitable for vegans.
Hosts comparing the whole nutrition panel
Chocolate, caramel and nut flavours can be compared on a per-bar basis rather than by the word “protein” on the front. In its November 2025 review of 458 snack bars from 10 major UK retailers, Action on Salt & Sugar classified 55% as high in saturated fat and 37% as high in sugars under UK front-of-pack thresholds. Those figures describe the products reviewed, not every bar.
What should you check?
Start with the amount in one bar, then read the nutrition and allergen information for each flavour you plan to serve.
| Priority | What to check | Your needs |
|---|---|---|
| Protein per bar | Read the labelled protein amount for one bar, not just per 100g. Check the bar weight when comparing different pack sizes. | “I’d like guests to know how much protein is in the bar they pick up.” |
| Allergens and dietary labels | Check the exact flavour’s ingredients, highlighted allergens and any vegan, gluten-free or dairy-free claim. Keep its identification with the bars when serving. | “Some guests avoid particular ingredients, so I need each variety to remain clearly labelled.” |
| Full nutrition panel | Compare sugars, saturates and energy alongside protein, using the same per-bar basis. Read “no added sugar” separately from the total sugars value. | “I’m offering chocolate or nut flavours, but I still want to compare what each portion contains.” |
Party-serving pitfalls
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Assuming “protein” means low in sugar or saturates
In its November 2025 review of 458 UK snack bars, Action on Salt & Sugar classified 37% as high in sugars and 55% as high in saturated fat under UK front-of-pack thresholds. A protein figure alone does not describe the rest of a bar’s nutrition panel.
Compare protein, sugars, saturates and energy per bar before choosing a multipack.
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Putting different bars into an unlabelled bowl
Recipes in this selection include ingredients such as peanuts, other nuts, soya and milk. Without their identification, guests cannot readily tell which variety they are taking.
Keep wrappers visible or put each variety beside its pack’s ingredient and allergen information.
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Treating dietary labels as interchangeable
Nature Valley Salted Caramel Nut is labelled gluten-free but contains peanuts, soya and milk, according to Nature Valley UK. Tesco lists Nakd Cocoa Hazelnut as vegan and “no added sugar”, while its nutrition panel gives 13g sugars per 45g bar.
Match each claim to the guest’s actual requirement, then check the full label for that flavour.
Relevant brand ranges
These examples describe particular products or lines, not every flavour a brand makes.
Nature Valley
Nature Valley UK describes its Salted Caramel Nut protein bar as a 40g gluten-free bar with around 10g protein and 4g fibre.
- A stated per-bar protein amount makes portions straightforward to compare.
- That recipe contains peanuts, almonds, soya and milk; gluten-free does not address those allergens.
TREK
TREK describes its protein flapjacks as vegan and gluten-free, with 9g plant protein per flapjack.
- A flapjack format offers a plant-based option where the exact pack confirms the dietary claims.
- Check the ingredients and allergens of each flavour rather than assuming they match across the range.
Graze
Tesco lists Graze Cocoa Vanilla Protein Flapjack at 9g protein, 13g sugars and 252kcal per 54g portion.
- The per-portion figures allow comparison with other bar sizes.
- Tesco’s listing warns of possible allergens from shared packing; check the pack before offering it to an allergy-sensitive guest.
Eat Natural
Eat Natural UK gives 7.8g protein per 40g bar for its Dark Chocolate & Peanut product.
- Its ingredient list identifies peanuts as 49.5% of that recipe.
- The product contains soya and may also contain milk and several tree nuts.
Nakd
Tesco lists Nakd Cocoa Hazelnut as a vegan, gluten-free, dairy-free 45g bar with 7.2g protein.
- Its stated dietary labels can be checked against a guest’s specific requirements.
- “No added sugar” does not mean sugar-free: Tesco lists 13g sugars per bar. Check the nut allergen information too.
Alpen
An Amazon UK listing for Alpen Protein Berries & Yoghurt, in 34g bars, states 19g protein per 100g.
- The stated per-100g figure provides a basis for checking the pack’s per-bar amount.
- The listed ingredients include oats, wheat, soya, milk and barley; check the exact pack against guests’ needs.
Snack bars on Joybuy
These Joybuy options cover protein flapjacks and peanut-based protein bars for a party assortment. Compare each pack’s current nutrition and allergen label before serving.
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TREK Salted Caramel Protein Flapjacks, 3 × 50g
A salted caramel flapjack option when planning a separate plant-based selection. Check this flavour’s protein amount, sugars and allergens on the pack; TREK’s protein-flapjack range is described as vegan and gluten-free.
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TREK Cocoa Oat Protein Flapjacks, 3 × 50g
A cocoa-and-oat flapjack for guests seeking a plant-based choice. Tesco describes TREK Cocoa Oat as vegan and gluten-free; confirm the exact pack’s ingredients and allergens before serving it.
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Nature Valley Protein Peanut & Chocolate Bars, 4 × 40g
A peanut-and-chocolate option to keep clearly identified in a mixed assortment. Nature Valley UK lists its Peanut & Chocolate protein bars at 10g protein and 4g fibre per bar and describes them as gluten-free; check the pack’s full allergen statement.
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Nature Valley Protein Salted Caramel Nut Bars, 4 × 40g
A salted caramel nut option with around 10g protein and 4g fibre per 40g bar, according to Nature Valley UK. It is described as gluten-free but contains peanuts, almonds, soya and milk, so keep its identification visible when serving.
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Eat Natural Protein-Packed Peanuts & Chocolate Bars, 3 × 40g
A peanut-and-chocolate bar for a clearly labelled nut-based part of the assortment. Check this pack’s protein and nutrition values rather than applying figures from another Eat Natural flavour; inspect its allergen statement before serving.
Questions about serving snack bars
Should I put different protein bars in one party bowl?
Keep the varieties identifiable instead of mixing unlabelled bars. The products discussed here have differing nut, soya and milk ingredients or warnings, so retain wrappers or place each variety beside its ingredient and allergen information.
Does “no added sugar” mean a bar contains no sugar?
No. Tesco lists Nakd Cocoa Hazelnut as “no added sugar” but gives 13g sugars per 45g bar. Read the sugars value on the nutrition panel when comparing portions.
Is a gluten-free protein bar suitable for someone with a nut or milk allergy?
Not on that claim alone. Nature Valley UK describes its Salted Caramel Nut bar as gluten-free, but its ingredients include peanuts, almonds and milk. Check every relevant allergen on the exact pack before offering a bar to a guest.