Fibre Boost Raw, Cold Pressed, Flavoured Protein Bar Cinnamon Donut
Fibre Boost Raw, Cold Pressed, Flavoured Protein Bar Cinnamon Donut: independently scored 10.0/10 on Protein Score and 9.9/10 on Clean Score by ProteinScore.
21.5g protein per serve · 137 cal · 0.2g sugar · 52mg sodium · 60g serve.
Overview
This is a bar built from the numbers up, and the numbers are exceptional. With a whey and milk protein isolate base, the recipe leans heavily on soluble prebiotic corn fibre to create a dense, cold-pressed bar. The result is a huge 45g of fibre per 100g, a metric that defines the eating experience as much as the protein content. Next to the typical protein bar on our list, the Cinnamon Donut version is in a different league. It packs in substantially more protein than the 27g category average, while its 0.4g of sugar per 100g is a fraction of the 10.6g average. With only eight ingredients, it also sits well below the category's typical ingredient count of 22, signalling a much less processed approach. Compared with other bars in the Fibre Boost lineup, it's a consistent performer. The Choc Malt flavour, for example, has fractionally less protein at 35.8g per 100g and the same near-zero sugar, showing the brand has nailed a core recipe and is simply tweaking the natural flavours. We see this as a pure-play functional food. It's not trying to be a chocolate bar or a dessert. It's a compact, efficient, and very clean source of protein and fibre for those who prioritise macros above all else.
Protein Score: 10.0/10
Shoppers looking for the most efficient protein hit in the bar aisle will land squarely here. The 21.5g of protein in a single 137-calorie bar is a standout, delivering a protein-per-calorie density that few products can match. It earns a 10/10, clearing the category average with ease. The protein source is a quality blend of whey protein isolate and milk protein isolate, two of the most effective and widely used forms in sports nutrition. This isn't a snack bar with a sprinkle of protein for marketing; it's a dedicated protein delivery system in a convenient, shelf-stable format. For a post-gym refuel or a tide-me-over afternoon snack, this bar provides the protein of a full shake without the associated calories or sugar. It's a smart choice for anyone tracking their macros tightly, where every calorie needs to justify its place.
Clean Score: 9.9/10
No artificial sweeteners, colours, or preservatives are the first things to notice on this label. In a category filled with long, complex ingredient lists designed to mimic confectionery, this bar's simplicity is its greatest strength. The short, eight-ingredient list earns a 9.8/10. The only additive is a natural sweetener, steviol glycosides (E960), derived from the stevia plant. This allows the bar to achieve a sweet taste without resorting to sugar or the artificial options that many ingredient-conscious shoppers prefer to avoid. The base is whole-food-driven, with almonds and cinnamon providing flavour and texture. This clean profile isn't a trade-off against performance. Fibre Boost has managed to create a product that scores at the very top for both protein content and ingredient simplicity. For the shopper who reads the back of the pack as carefully as the front, this bar offers a high degree of confidence.
Wins
- A huge 21.5g of protein in a low 137-calorie bar.
- A very short list of only 8 ingredients.
- Less than 1g of sugar per 60g serve.
Watch outs
- High fibre content (45g/100g) may not suit all digestive systems.
- Cold-pressed texture is very dense and chewy, not light or crispy.
- Contains almonds, making it unsuitable for nut-free environments.
Ingredients
Soluble Prebiotic Fibre (Corn), Whey Protein Isolate (Milk), Milk Protein Isolate, Almonds, Cinnamon, Natural Flavour, Sweetener (Steviol Glycosides), Salt.
8 ingredients.
Frequently asked questions
- Will this protein bar actually keep me full?
- Yes, in our view this bar is highly satiating for its size. The main reason is its exceptionally high fibre content, which is around 27g per 60g bar. Fibre helps to slow digestion and contributes to a feeling of fullness. Combined with 21.5g of protein, it's a dense and filling snack. We'd consider it a very effective option for managing hunger between meals.
- Is this a snack or can it replace a small meal?
- We'd frame this firmly as a high-protein snack, not a meal replacement. At 137 calories, it doesn't provide the energy of a full meal. However, its high protein and fibre content make it a very substantial snack that could tide you over for a few hours. It's ideal for an afternoon slump or a post-workout refuel, but not intended to replace breakfast or lunch.
- How does the Cinnamon Donut flavour compare to others in the range?
- The Cinnamon Donut flavour is nutritionally almost identical to other bars in the Fibre Boost range. For example, it has 0.1g more protein per 100g than the Choc Malt version and the same near-zero sugar content. This suggests the brand uses a consistent, high-quality base recipe across its products. The main difference will simply be the natural flavour profile, so you can choose based on preference.
- What kind of protein does this bar use?
- This bar uses a blend of whey protein isolate and milk protein isolate. These are high-quality, highly bioavailable forms of dairy protein, popular in sports nutrition for their effectiveness in muscle repair and growth. Unlike some bars that use lower-quality protein sources like soy or collagen to boost the numbers, this one relies on proven, premium ingredients. It's a solid choice for serious protein supplementation.
- What makes this considered a 'clean' protein bar?
- This bar scores very well on our clean criteria primarily due to its short ingredient list and lack of artificial additives. It contains only eight ingredients, whereas the average bar in this category has around 22. It contains no artificial sweeteners, colours, or preservatives, using only natural flavours and a plant-derived sweetener (stevia). This makes it a less-processed option in a typically heavily-processed category.