The Best Vegan Peanut Butter Protein Powder in the UK


Reading time	5 mins
Topic	Vegan Protein & Nutrition
Author	Patrick Mooney, That Protein

If you love peanut butter — and honestly, who doesn't — the idea of a protein powder that actually tastes like the real thing is pretty appealing. But if you've tried a few peanut-flavoured protein powders and been disappointed by a chemical aftertaste, a bloated stomach, or an ingredient list longer than your shopping list, you're not alone. This guide breaks down exactly what to look for in a vegan peanut butter protein powder in the UK, what most brands quietly get wrong, and why Nutty Nutty by That Protein is in a category of its own.

What to Look for in a Peanut Butter Protein Powder

The best vegan peanut butter protein powders share a few non-negotiable qualities. First and foremost: real peanuts. It sounds obvious, but many products rely entirely on artificial flavouring to mimic the taste of peanut butter — meaning you get the smell but none of the real-food nutrition that comes with actual peanuts.

Beyond that, look for:

A short, recognisable ingredient list. If you need a chemistry degree to read the label, put it back. A quality protein powder should contain ingredients you could, in theory, find in your kitchen.
A genuine plant-based protein base. Organic pea protein and organic rice protein are well-tolerated, easy to digest, and nutritionally solid options.
A natural sweetener. Refined sugars spike blood glucose; artificial sweeteners come with their own set of problems (more on that below). Look for low-glycaemic alternatives like palmyra nectar, which provides gentle sweetness from a natural whole-food source.
Gut-friendliness. For anyone with a sensitive stomach or IBS, this matters enormously. Certifications that confirm low FODMAP status — like those from FODMAP Friendly — offer genuine reassurance, not just marketing copy.
No unnecessary fillers. Gums, stabilisers, and bulking agents are common in cheaper products. They add nothing nutritionally and can actively irritate sensitive digestion.

What Most Brands Get Wrong

Walk into any health food shop or scroll through the protein powder aisle online and you'll find no shortage of peanut butter-flavoured options. Most of them make the same mistakes.

Artificial sweeteners. Sucralose, acesulfame potassium, and aspartame are standard inclusions in mainstream protein powders. These are added to keep calories low while maintaining sweetness — but research increasingly links them to disrupted gut bacteria, digestive discomfort, and even counterproductive effects on metabolism. For anyone managing IBS or a sensitive gut, they're a particular concern.

Chicory root (inulin). This fibre is frequently added to protein powders under the guise of being "gut healthy." The reality is more complicated. Chicory root is a high-FODMAP ingredient — a potent source of fructans — and is well known to trigger bloating, cramping, and digestive distress in people with IBS or food sensitivities. If you've ever had a protein shake that left you uncomfortably bloated, chicory root may well have been the culprit.

Artificial flavouring instead of real peanuts. Plenty of "peanut butter protein" products contain no actual peanuts at all. They use chemical flavour compounds to replicate the taste. You miss out on the genuine nutrition — the natural fats, B vitamins, and minerals — that real peanuts provide.

Poor-quality peanut sourcing. Not all peanuts are equal. Conventionally grown peanuts can carry pesticide residues, and lower-grade peanut flour often lacks the depth of flavour that makes a truly satisfying shake. Organic, fair-trade peanuts simply taste better — and give you more confidence in what you're consuming.

The result of all these shortcuts? A product that technically delivers protein, but comes loaded with ingredients that work against your body rather than with it.

Why Nutty Nutty Stands Apart

Nutty Nutty Peanut Butter Protein from That Protein was built on one straightforward premise: make a peanut butter protein powder from actual peanut butter ingredients, with nothing else added.

The full ingredient list is: organic peanut protein, organic pea protein powder, organic chia protein powder, and palmyra jaggery. That's it. No artificial sweeteners. No chicory root. No gums, stabilisers, or chemical flavourings. Every ingredient is organic and ethically sourced.

Here's what makes it different in practice:

Real roasted peanuts. The flavour comes from genuine organic peanut protein — roasted and powdered — not from a flavour laboratory. Judges at the 2018 Nourish Awards, where Nutty Nutty was voted Best Protein, described it as "like peanut butter in a drink." That's not an accident. That's what happens when you use real ingredients.
Low FODMAP Friendly. Nutty Nutty is Low FODMAP Friendly — making it a genuinely gut-considerate choice for people managing IBS or digestive sensitivities. That Protein is the UK's only FODMAP Friendly Certified protein food brand, certified by FODMAP Friendly.
Naturally energising. The blend provides fatigue-busting B vitamins alongside calcium, potassium, iron, and magnesium — nutrients that come naturally from the organic ingredients, not from synthetic fortification.
Completely additive-free. There is not a single chemical additive in the formula. No artificial colours. No preservatives. No proprietary blends masking unknown quantities of inferior ingredients.
Made with organic ingredients. Every ingredient in Nutty Nutty is sourced organically and, where applicable, from fair-trade supply chains — good for you, and good for the people growing the food.

For anyone who has tried peanut-flavoured protein powders and given up, Nutty Nutty is worth approaching with fresh expectations. It tastes like what it says it is.

How to Use Nutty Nutty

One of the best things about a genuinely clean protein powder is its versatility. Because Nutty Nutty contains only real food ingredients, it works in far more contexts than a standard shake.

Classic peanut butter shake: Blend a serving with your preferred plant milk, a banana, and a handful of ice. Thick, creamy, and genuinely satisfying — no artificial aftertaste.

Protein porridge: Stir a serving into cooked oats along with a drizzle of honey or maple syrup. The peanut flavour deepens beautifully when warmed through.

Protein balls and energy bites: Combine Nutty Nutty with rolled oats, a little coconut oil, and your choice of seeds or dark chocolate chips. Roll into balls and refrigerate. A classic high-protein snack that takes ten minutes to make.

Smoothie booster: Add a serving to any fruit smoothie for a protein and B vitamin boost. It pairs particularly well with banana, oat milk, and a pinch of cinnamon.

Baking: Nutty Nutty works well stirred into pancake batter, brownie mix, or protein muffin recipes. Real peanut flavour without any of the additives that can throw off your baking.

The Wider That Protein Range

Nutty Nutty is the peanut butter specialist, but it sits within a broader That Protein family built on exactly the same philosophy: made with organic ingredients, completely additive-free, and certified Low FODMAP where applicable.

If you're a chocolate lover, Blissful Brown Rice & Raw Cacao Protein is a rich, smooth protein powder made with organic brown rice protein and raw cacao — and it holds full FODMAP Friendly certification from FODMAP Friendly. Choca Mocha brings a coffee-chocolate combination to the same clean-ingredient standard. And for a warming, protein-rich breakfast, Double Choc Protein Porridge — also FODMAP Friendly certified — combines premium oats, rice protein, cacao nibs, and palmyra nectar into something that actually makes getting out of bed easier.

All That Protein products are vegan, dairy-free, gluten-free, and free from artificial sweeteners, gums, and chemical additives. The entire range is built for people who want real food that works — with nothing they don't need.

The Bottom Line

Finding a genuinely good vegan peanut butter protein powder in the UK is harder than it should be. Most products cut corners with artificial sweeteners, high-FODMAP fillers like chicory root, and synthetic flavouring that bears little resemblance to an actual peanut.

Nutty Nutty is the exception: a short, honest, organic ingredient list, real roasted peanut flavour, Low FODMAP Friendly status, and an award-winning taste that speaks for itself.

If your stomach has been telling you that most protein powders aren't right for you, it's probably been correct. Try Nutty Nutty and find out what a genuinely clean peanut butter protein powder tastes like.