Grenade Chocolate Chip Cookie Dough Review - is it actually low sugar?

One of the UK's best-selling protein bars put to the test, here's the honest verdict...

Table of Contents

Introduction

What Is It

Grenade’s Chocolate Chip Cookie Dough Protein Bar is one of the most recognisable names in the UK protein snack aisle, and for good reason. It promises the indulgence of chocolate chip cookie dough with the nutritional credentials of a post-gym bar — high protein, low sugar, and satisfying enough to stop you raiding the biscuit tin.

But does the Grenade Chocolate Chip Cookie Dough Protein Bar actually deliver, or is it trading on clever branding? This review breaks it down honestly, section by section.

Nutrition

Nutritional Breakdown

On paper, the sugar numbers look impressive: just 1.4g of sugar per bar, with no added sugar. For anyone tracking macros or trying to reduce their daily sugar intake, that figure is genuinely appealing. The protein content is where the bar earns most of its keep, making it a credible option for post-workout recovery or a filling snack that won’t spike and crash your energy mid-afternoon.

The caveat is that “low sugar” doesn’t tell the whole story here. Maltitol, the sweetener doing the heavy lifting, is a polyol that still has a measurable effect on blood glucose, unlike some of the gentler alternatives used by other brands. It also carries a well-known risk of digestive discomfort, particularly if consumed in quantity or if your stomach leans sensitive. The overall nutritional profile is solid for its category, but go in with eyes open rather than assuming the low-sugar label means no compromises.

Sensory

Taste & Texture

Open the wrapper and it smells genuinely good. Properly chocolatey, the kind of smell that makes you think you’ve made a better decision than you actually have. It looks the part too: well-presented, with a chewy, dense appearance that signals it won’t crumble into dust the moment you touch it.

The eating experience holds up reasonably well. The texture is chewy throughout, not unpleasantly so, and there’s a real cookie dough quality to it in both the chew and the flavour. You get sweetness and a faint caramel note, and it’s fairly sweet overall, which will suit some people and feel like a bit much for others. Importantly, the flavour stays consistent right through to the end, and the aftertaste is pleasantly cookie dough-ish rather than the synthetic fade you sometimes get with this type of bar. It delivers what it says on the packet, which is more than can be said for a fair few competitors.

The sweetness here comes primarily from maltitol, a sugar alcohol, and that’s worth knowing before you tuck in. Unlike stevia or erythritol, maltitol still raises blood glucose, not as sharply as regular sugar, but it’s not the free pass it might appear to be. If you’re managing blood sugar for medical reasons, don’t assume this is safe territory without checking with your GP first.

Formula

Ingredients & Label Analysis

The protein blend here is whey protein isolate and calcium caseinate, both dairy-derived, which is a decent combination. Isolate is a fast-digesting protein useful post-workout, while caseinate digests more slowly, giving you a more sustained release. It’s a sensible pairing and a genuinely good sign for a bar in this price bracket. There’s also bovine collagen hydrolysate in the mix, which some people will welcome for joint and skin support, though it’s worth knowing collagen is not a complete protein source and shouldn’t be counted as your primary protein hit.

The rest of the label is fairly clean by processed snack standards. Glycerol acts as a humectant to keep the bar moist, polydextrose is a low-calorie bulking agent with some prebiotic benefit, and the cocoa butter and cocoa mass give the chocolate coating its flavour base. Soy lecithin appears as an emulsifier, so this bar isn’t suitable for anyone with a soy allergy despite being dairy-forward in its protein sources.

The big flag remains maltitol sitting at position two on the ingredients list, meaning it’s present in a significant quantity. For most people that won’t be an issue in a single bar, but it’s the reason the sugar content score can’t climb higher despite the impressive headline numbers.

Ingredients:

Price

Value for Money

At around £2 per bar, the Grenade Chocolate Chip Cookie Dough Protein Bar sits in the mid-range of the protein bar market. Not cheap, but not eye-watering either. For the size, the protein content, and the fact that it genuinely tastes like something you’d want to eat, it represents fair value. You’re paying a small premium over a standard chocolate bar, but getting meaningfully more protein and considerably less sugar in return.

Where value becomes more subjective is if you’re buying it specifically for blood sugar management or digestive health reasons. If the maltitol causes you issues, you’ve essentially paid £2 for a bar you can’t comfortably eat again, and there are alternatives at a similar price point using gentler sweeteners. For the majority of people who don’t have that problem though, it’s a reasonable spend.

Verdict

Everyday Usability

This is fundamentally a grab-and-go bar, and it does that job well. It doesn’t need refrigerating, it fits in a bag or jacket pocket, and at around £2 it’s the sort of thing you can keep a couple of in your desk without feeling like you’ve committed to anything. For a mid-morning snack, a post-workout pick-me-up, or something to stop you making bad decisions at 3pm, it earns its place.

Grenade bars are widely available across the UK. Amazon, Tesco, Sainsbury’s, Holland & Barrett and most supermarkets stock them, so you won’t need to hunt around or rely on online orders. That kind of accessibility counts for a lot when you’re trying to build a consistent routine rather than remembering to reorder every few weeks.

Bottom line

Yay or Nay?

The Grenade Cookie Dough Protein Bar does more right than wrong. It tastes like it should, it’s easy to find, and it does the job as a convenient high-protein snack. Most people will enjoy it and probably buy it again. If you’re managing blood sugar, have a sensitive digestive system, or assumed “low sugar” meant no side effects, read the label carefully before making it a staple. The maltitol is the one thing holding this bar back from a straightforward recommendation. For everyone else, it’s a solid 3pm desk drawer essential.

Frequently Asked Questions