Energy Bars

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Protein bars are one of the most practical ways to hit your macro targets without compromising on taste or convenience. Whether you're heading to the gym, powering through a long run, or just need something substantial between meals, an energy bar gives you the fuel you need in a format that fits in your pocket. The range here covers everything from oat-based flapjacks to dedicated post-workout bars, each built around real nutritional goals rather than empty calories.

Every bar in this range is developed with a clear purpose — real protein content, considered carbohydrate sources, and macros that actually make sense. With formats spanning high-protein oat bars to carbohydrate and protein combinations, there's something here for every training style and daily routine.

Who Energy Bars Are For

Energy bars are built for people who train hard and live busy. If your schedule doesn't allow time to prep a full post-workout meal, or you need something solid to fuel you before a session, these bars slot seamlessly into your day. Gym-goers, runners, cyclists, and anyone doing high-output physical activity will find a bar in this range that matches their macros and their moment.

They're equally useful for people who aren't elite athletes but still want smarter snacking. Desk workers, commuters, and active professionals who need something more substantial than a standard snack — something with real protein content and carbohydrates from quality sources — will find these bars a straightforward upgrade on the alternatives.

When to Use Energy Bars

Timing matters with energy bars, and the right choice depends on what you're asking of it. Before a training session, a bar with a solid carbohydrate base gives you the sustained fuel to perform. The Oat Protein Flapjack, built on oats with 20g of protein, is well-suited to pre-session use — slow-releasing carbs from oats paired with a meaningful protein hit makes it a dependable choice ahead of a workout.

After training, your body needs carbohydrates and protein together. Carbohydrates contribute to the recovery of normal muscle function after intensive physical exercise leading to muscle fatigue and the depletion of glycogen stores in skeletal muscle¹, while protein contributes to the growth and maintenance of muscle mass². THE Re-Fuel Protein Bar is designed specifically for this window, combining 22g of protein with carbohydrates in a format made for post-workout use. Outside of training, these bars also work well as a between-meal snack when you need something with nutritional substance.

Energy Bars Benefits

Serious Protein Content

The protein bars in this range aren't token additions — they're built around protein as a primary ingredient. With options delivering up to 22g of protein per bar, they're a practical way to hit your daily protein targets. Protein contributes to the growth and maintenance of muscle mass², making these bars a smart inclusion in any training routine.

Quality Carbohydrate Sources

Oat-based bars like the Oat Protein Flapjack use oats as their carbohydrate foundation — a slow-releasing source that provides sustained energy rather than a sharp spike and crash. For post-workout use, carbohydrates from these bars contribute to the recovery of normal muscle function following intensive exercise¹.

Convenient Format, No Compromise

A bar you can eat on the way to the gym, between meetings, or straight after a session is worth having. These bars are designed to be portable without cutting corners on nutrition — no fridge required, no prep time, and no awkward portion sizes. Just a consistent macro profile in a format that works around your day.

Low Sugar Options Available

Not every energy bar needs to rely on sugar to taste good or function well. The Protein Oatbakes are high in protein and low in sugar, making them a solid choice for people keeping a closer eye on their sugar intake without sacrificing the protein content they're after.

Popular Picks

Oat Protein Flapjack — A flapjack built for those who want real food with real protein — 20g per bar across three flavours that actually taste good.

Protein Oatbakes — If you want a high-protein, low-sugar snack you can throw in your bag and eat anywhere, Protein Oatbakes are the straightforward answer.

THE Re-Fuel Protein Bar | Carbohydrate & Protein Bar — Stacking 22g protein and 32g carbohydrates into one bar, THE Re-Fuel Protein Bar is built for the window right after training when your body needs both.

FAQs

What are protein bars and what are they made from?

Protein bars are portable, snack-sized bars formulated with a high proportion of protein alongside carbohydrates and fats, designed to fit practical nutritional goals. Most are built around protein sources such as whey, milk protein, or plant-based alternatives, combined with carbohydrate sources like oats, alongside fats, flavourings, and other functional ingredients. The balance of macros varies by product — some prioritise protein above all else, while others combine protein with carbohydrates for specific training use cases.

What's the difference between a protein bar and an energy bar?

Protein bars and energy bars overlap significantly, but the distinction usually comes down to macronutrient emphasis. Protein bars prioritise protein content — typically 15g or more per bar — while traditional energy bars often lean more heavily on carbohydrates for quick fuel. The bars in this range sit across that spectrum: the Oat Protein Flapjack delivers 20g of protein alongside oat-based carbohydrates, while THE Re-Fuel Protein Bar combines 22g of protein with carbohydrates specifically for post-workout use. Both qualify as energy bars in the broader sense.

Are protein bars good for after a workout?

A bar that combines protein and carbohydrates is well-suited to post-workout use. Carbohydrates contribute to the recovery of normal muscle function after intensive physical exercise leading to muscle fatigue and the depletion of glycogen stores in skeletal muscle¹, and protein contributes to the growth and maintenance of muscle mass². THE Re-Fuel Protein Bar is designed with this window in mind, offering 22g of protein alongside carbohydrates in a convenient, ready-to-eat format.

How many protein bars can I eat per day?

There's no universal rule — it depends on your overall diet, your protein targets, and how the bars fit into your daily food intake. Most people use one bar per day as a meal complement or snack, rather than a meal replacement. Check the nutritional information on each product and factor the macros into your total daily intake alongside whole food meals.

What's the best oat protein bar for training?

The Oat Protein Flapjack is a strong choice for training use, combining 20g of protein with oats as the primary carbohydrate source. Oats provide a slower-releasing carbohydrate compared to simple sugars, making this bar a practical option before or after a session. It's also a straightforward format — no complicated prep, just a bar with a solid nutritional profile built around real oat-based ingredients.

Are there low sugar protein bars in the range?

The Protein Oatbakes are high in protein and low in sugar, making them a practical option for people who want the protein content without a heavy sugar load. Low sugar doesn't mean low quality — the macros are built to work for people who are managing their overall sugar intake as part of a considered diet.

Who develops the energy bars at Myprotein?

Myprotein's expert nutritionists develop every bar in the range, working to create products that meet real training and lifestyle needs. That means considering the right protein sources, carbohydrate quality, macronutrient ratios, and overall palatability — not just chasing headline numbers. The result is a range built on nutritional logic, not just marketing.

What formats are available in the energy bars range?

The range includes several distinct formats to suit different preferences and use cases. There are classic protein flapjacks made with oats, oatbakes for a lighter texture, and dedicated carbohydrate and protein bars designed specifically for post-workout use. Each format has its own nutritional profile, so the right choice depends on when you're eating it and what you need from it macronutrient-wise.

Can energy bars replace a meal?

Energy bars are designed as complements to a balanced diet rather than direct meal replacements. They work well as between-meal snacks, pre-workout fuel, or post-workout nutrition — situations where a full meal isn't practical. For most people, they slot in alongside regular meals rather than substituting them, helping to hit daily protein or carbohydrate targets without relying solely on prepared food.

How do I choose between the different protein bars available?

Start with timing and purpose. If you want something to fuel training or recover from it, THE Re-Fuel Protein Bar with 22g of protein and added carbohydrates is built for that role. If you prefer an oat-based bar with a more food-like texture, the Oat Protein Flapjack or Protein Oatbakes are worth exploring — the latter being particularly suitable if you're keeping sugar intake low. Match the bar to your macro targets and the moment you're eating it in.

1. Carbohydrates contribute to the recovery of normal muscle function (contraction) after highly intensive and/or long-lasting physical exercise leading to muscle fatigue and the depletion of glycogen stores in skeletal muscle.  

2. Protein contributes to the growth and maintenance of muscle mass.