Nutrition
Best Greens Powder UK 2026: Top Super Greens Compared
The best greens powders in the UK for 2026, from budget super greens to premium all-in-one blends, plus an honest look at whether greens powders actually work.
Nutrition4.2
Trek Cocoa Oat Protein Flapjack Review: Worth It?
By Declan Hallwood, Nutrition & Supplements Editor · Updated 26 June 2026
We may earn a commission from qualifying purchases made through links on this page, at no extra cost to you. This never affects our ratings.
The Trek Cocoa Oat Protein Flapjack is a vegan, gluten-free snack bar packing 9.2g of plant-based protein per bar, and after working through a whole pack of 16, it's earned a firm thumbs up from us. Below we cover the taste and texture, the full nutritional breakdown, and whether it's genuinely good value for money.
Trek is one of the UK's leading makers of high-quality nutritional snacks, specialising in protein-rich foods. There's good news for plant-based eaters here: their Protein Energy Bars, Protein Flapjacks and Protein Nut Bars are all completely vegan, gluten-free and GM free. The Cocoa Oat flapjack is readily available direct from Amazon UK, with next-day delivery via Prime.
Pros
- 9.2g of plant-based protein per bar
- Genuinely delicious cocoa and oat flavour
- Chewy, moist texture that isn't crumbly
- Vegan, gluten-free and GM free
- Good value at around £1 per flapjack
Cons
- A little sweet for some tastes
- Moreish, so it's easy to eat more than one
- 227kcal per bar adds up quickly
| Pack size | 16 bars, 50g each |
|---|---|
| Energy | 227kcal per bar (454kcal per 100g) |
| Protein | 9.2g per bar (18.4g per 100g) |
| Carbohydrate | 21.9g per bar, of which 14.0g sugars |
| Fat | 11.0g per bar, of which 5.2g saturates |
| Dietary | Vegan, gluten-free, GM free |
Taste and texture
The flavour is exactly what you'd hope for, flapjack-y and chocolatey, and very nice indeed. The cocoa and oat combination was always going to be a winner, and the Trek Cocoa Oat Protein Flapjack doesn't disappoint. It's possibly a touch sweet for certain tastes, but it's not an overpowering sweetness.
The bars are super chewy without being crumbly, with a moist texture and a balanced flavour. You'd swear they'd slipped some gluten in there to get them this chewy, but no, they're completely gluten-free, making them perfect for gluten-sensitive vegans and coeliacs.
They're moreish
At 227kcal each, these are very easy to keep reaching for. We'd recommend taking one or two with you and leaving the rest in the cupboard, so the box isn't staring at you all day.
We found ourselves using them as a breakfast replacement on rushed mornings. They kept us going right through to lunch, so they're great for keeping hunger pangs at bay.
Nutrition
If you're tracking your macros or just health-conscious, here's the full nutritional breakdown for the Trek Cocoa Oat Protein Flapjack.
| Nutrient | Per 100g | Per 50g (per bar) |
|---|---|---|
| Energy | 454kcal | 227kcal |
| Fat | 22.0g | 11.0g |
| of which saturates | 10.3g | 5.2g |
| Carbohydrate | 43.9g | 21.9g |
| of which sugars | 27.9g | 14.0g |
| Fibre | 3.9g | 1.9g |
| Protein | 18.4g | 9.2g |
| Salt | 0.9g | 0.5g |
Calories sit at a fairly moderate 227kcal per bar, which is about average for this kind of product. Just be aware that a second one pushes you close to 500kcal from what's effectively a snack. Protein is decent at almost 10g per bar, giving you a nice little boost for a pre- or post-workout snack.
Cost and value
RRP for the Trek Cocoa Oat Protein Flapjack sits at around £16.80 for a pack of 16, which works out at roughly £1 per flapjack, not bad at all. Plenty of places charge between £1 and £2 for similar products, so Trek's flapjacks are good value for money.
If you spot them on Amazon UK for less than that, it's worth jumping on the chance. At the time of our review they were heavily reduced to just £8.13 for a box of 16, which is great value.
For more options, see our roundup of the best vegan protein bars in the UK.
Frequently asked questions
How much protein is in a Trek Cocoa Oat Protein Flapjack?
Each 50g bar packs 9.2g of protein, giving you a useful boost for a pre- or post-workout snack from a plant-based source.
Is the Trek Cocoa Oat Flapjack vegan and gluten-free?
Yes. The Trek Cocoa Oat Protein Flapjack is completely vegan, gluten-free and GM free, so it suits gluten-sensitive vegans and coeliacs.
How many calories are in a Trek protein flapjack?
There are 227kcal per 50g bar (454kcal per 100g). That's about average for a snack of this type, so be mindful if you eat two in one sitting.
Related guides
Nutrition
Bulk Creatine Monohydrate Review: The Cheap Tub That Just Works
An honest Bulk Creatine Monohydrate review covering purity, the Creapure option, mixability and grittiness, unflavoured taste, dosing and whether the big tubs are good value.
Nutrition
C4 Pre Workout Review: Is Cellucor C4 Original Worth It?
An honest Cellucor C4 Original pre-workout review for the UK: caffeine, beta-alanine tingles, creatine nitrate, flavours, value versus rivals, and who should actually buy it.
Nutrition
Grenade Carb Killa Review: The Protein Bar That Tastes Like a Chocolate Bar
An honest Grenade Carb Killa review covering protein, sugar and calories per bar, the best and worst flavours, taste and texture, who they suit and whether they are worth the money.
Best Exercise is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk. As an Amazon Associate we earn from qualifying purchases. This comes at no extra cost to you and never influences our independent reviews or rankings.