5.0 out of 5 stars Tasty

S.M. · 12 May 2025

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5.0 out of 5 stars Good

P.M. · 14 May 2025

I like it

4.0 out of 5 stars Top marks for nutritional content but the flavour wasn't for me

R.W. · 16 September 2023

First, the positives - what these bars have going for them is the very decent size, which makes for a filling post-workout or between-meals healthier snack. They're substantial, have a nice chewy (rather than crunchy) texture thanks to the crispie-style mix, and they pack a very decent 20g of protein per bar.In terms of taste, I just found them OK, and they're not my favourites in the Optimum Nutrition range. They certainly look the part, like drizzled flapjacks. And they are extremely sweet, and that sweetness does taste a little artificial. There's a definite 'health bar' feel to this where the other varieties manage to taste more 'treat', although that could just be personal taste (after all, marshmallow isn't the most subtle or natural flavour).You can't fault the bar on nutritional content, though, like all the ON products - they're solid, and make for a great addition to a managed, high-protein diet. Top marks for content as always - and if you like marshmallow, they could be right up your street (though personally I'll stick to the Chocolate Sea Salt Crunch).

5.0 out of 5 stars For those who love delicious protein bars

T. · 13 December 2023

Love the marshmallow taste.I go to gym and used to always find it hard to get some sort of snack afterwards to keep me going till mealtime plus something with protein in. Then a friend recommended this product.Love it!The only downside the amount of sugar. As much as I like the taste, at times it is a tad too sweet for me.If you are not into sugary bars, then it's not the product for you, but otherwise, it's a great protein bar and keeps one going after a good workout session.Would definitely recommend.

3.0 out of 5 stars American chocolate taste - but happy other than that

H. · 30 August 2023

I'm a fan of Optimum Nutrition, who always put out good quality products - whether that is bars or powders or drinks - I'm very trusting of their brand.These bars look great once you open them up - like a premium chocolate bar.You get a solid 20grams protein per bar, but they do come loaded with 6.3grams of fat and 5grams of saturated fat, which is pretty considerable and worth checking against your macros if you track that kind of thing.Unfortunately for me, the bars have an American Chocolate taste, which I'm quite sensitive to. For people who do have the same sensitivity as me, you can end up getting a weird sour/earthy taste when you eat these and it's not really something you can just overlook for the nutritional benefits either.That said, I gave them to a friend who has been really enjoying them and doesn't experience the same weird tastes as me... so it's certainly based on the individual.

1.0 out of 5 stars Sometimes very stale

T.C. · 21 May 2024

I have bought the marshmallow flavour a few times but it can be a hit or a miss. Sometimes they are like a normal bar but frequently the appear to be off slightly? Almost very hard / stale.

5.0 out of 5 stars Really tasty!

J.M.T. · 12 November 2023

First impressions of these were good, the bars are a decent size and come in a branded display box.Taste wise they are very sweet, definitely one for those with a sweet tooth! They really do taste like marshmallow and white chocolate and are more chewy than crunchy. It has a bit of a milky aftertaste with a hint of the protein bar coming through.Overall though I really enjoyed these as a quick snack/ tasty treat and a good way to get my protein in!

5.0 out of 5 stars In love with these bars.. they taste amazing

A.s. · 3 August 2023

This is my favourite flavour bar from the ones I've tried I've tried maybe 5 or 6 others not every flavour they have on offer but this one it's yummyThe best flavour in my opinion, nice for a guilt free treat. Also good melted in the microwave as a pudding! Delicious.Great protein bar. Always keep some of these in the cupboard as you just can't go wrong with them. Taste great but not too protein-y tastingThis protein bar is amazing! Tastes like A really tasty chocolate bar. I just want to inhale the whole box! Very moreish. My personal favourite