In the ever-growing world of high-protein snacks, the Custard Protein Bar by Muscle Nation stands out with its unique custard-filled centre, rich texture, and sweet snack appeal. Whether you’re chasing your macros, need a convenient post-workout bite or simply looking for a better tasting protein bar, this offering aims to bridge taste and function.

From the brand behind Australia’s popular Custard Protein powder range, this bar is designed to serve up indulgence and performance in one convenient package. It delivers a custard-centre, a chocolate coating and a crisp bite, all while packing solid protein content and being real-food snack friendly. Let’s dive into flavours, price, ingredients, nutrition, target usage, stacking, FAQs and verdict.
Flavours, price & pack sizes
Here’s what you’ll find in the flavour and sizing department for the Custard Protein Bar by Muscle Nation:
- Available flavours include: Cookies & Cream, Caramel Toffee, White Choc Raspberry, Choc Fudge Brownie, Birthday Cake and Choc Peanut Butter.
- Pack size: Typically sold as a Box of 12 bars. For example, Custard Protein Bar Cookies & Cream Box of 12.
- Pricing: Australian retail varies; generally around AUD $42–$55 per box depending on flavour/promotions.
These bars are presented more as premium snack bars than budget gym bars, and the flavour line-up reflects that, with rich textures, coatings and inclusions designed to satisfy.
Ingredients & benefits
To understand how this bar works, let’s break down the key ingredients and what they bring to your training, recovery or daily snack routine:
- Custard-filled centre – This unique centre offers slow-digesting milk-derived protein and enhances satiety and flavour.
- Protein content – Supports muscle repair, recovery and helps meet daily protein targets. Eg: MN Custard Protein Bar Cookies & Cream flavour: 16.1g protein per serve.
- Moderate carbs and fats – For most flavours you’ll find ~211 Cal, 5–6g fat, 5–6g carbs (with some variation). This makes it suitable for controlled-macro approaches rather than ultra-low-carb only.
- Australian manufacture & transparency – Muscle Nation emphasises full ingredient disclosure and local production.
In short, the Custard Protein Bar by Muscle Nation delivers a balance between snack-bar indulgence and functional supplementation, making it a smart choice whether your goal is recovery, meal-supplement or indulgent-but-smart treat.
Nutritional panel
A convenient snack bar should deliver transparent nutrition, and for the Custard Protein Bar by Muscle Nation, here’s a detailed look at a typical flavour’s macro profile so you can assess how it fits your diet.
| Nutrition Information | Per Serve (60g) | Per 100g |
| Energy | 861 kJ (206 Cal) | 1430 kJ (343 Cal) |
| Protein | 16.1g | 26.8g |
| Fat, Total | 6.6g | 11.0g |
| – Saturated | 5.0g | 8.3g |
| Carbohydrates, Total | 6.3g | 10.5g |
| – Sugars | 4.3g | 7.1g |
| Dietary Fibre – Total | 8.7g | 14.3g |
| – Polydextrose | 2.7g | 4.4g |
| Sodium | 110mg | 183mg |
| Sorbitol | 0.9g | 1.6 g |
| Maltitol | 3.3g | 5.5g |
| Glycerol | 6.7g | 11.1g |
| Erythritol | 2.7g | 4.5g |
Ingredients: Muscle Nation Cookies & Cream Custard 26% (Cookies & Cream Custard Powder, Skim Milk Powder, Inulin, Coconut MCT Oil Powder, Cookies 4% (Wheat, Soy), Flavours, Anticaking Agent (551), Thickener (Carboxymethylcellulose), Sweetener (Sucralose), Sodium Chloride, Sweetener (Maltitol), Humectant (Glycerol), Isomalto-Oligosaccharide (Soluble Fibre)), No Added Sugar White Choc 20% (Vegetable Fat, Cocoa Solids 15%, Milk Solids 15%, Inulin, Corn Fibre, Emulsifier (Soy 322), Natural Flavour, Intense Sweetener (960), Monk Fruit Sweetener), Vanilla Paste 8% (Invert Sugar, Humectant (Sorbitol, Glycerol), Concentrated Pear Puree, Bulking Agent (Polydextrose), Sunflower Oil, Citrus Fibre, Natural Flavour, Gelling Agent (Pectin), Firming Agent (Calcium Lactate), Natural Colour (Titanium Dioxide)), Polydextrose, Humectant (Glycerol), Hydrolysed Collagen, Soy Protein Isolate, Soy Protein Crisps, Whey Protein Concentrate (Milk), Milk Protein Concentrate, Black Waffle Crunch 3% (Wheat, Soy), Cocoa Powder, Isomalto-Oligosaccharide (Soluble Fibre), Sweetener (Maltitol), Sunflower Oil, Soy Protein Crisps, Flavour, Salt, Emulsifier (Soy Lecithin), Natural Flavour, Antioxidant (Vitamin E).
Allergens: Contains Wheat, Gluten, Milk, Soy. May be present: Peanut, Sesame, Tree Nuts.
Who it’s for
If you’re considering adding the Custard Protein Bar by Muscle Nation into your routine, here’s who it works well for and where to use it:
- Gym-goers and athletes needing a quick, tasty protein boost post-session or between meals.
- Busy professionals or students requiring a grab-and-go snack that doesn’t compromise on protein.
- Those on controlled diets who want better flavours and textures than typical diet bars.
- Snack lovers with fitness goals who don’t want to give up taste entirely.
It may be less ideal for those on strict ultra-low-carb diets or who avoid all sugar alcohols, while the bar is moderate in carbs, it still includes sweeteners and coatings.
Stacking suggestions
Using the Custard Protein Bar by Muscle Nation alongside other supplements can maximise its benefit:
- With a protein shake: Use the bar as a half-meal snack and a shake post-workout for full meal replacement.
- With creatine monohydrate: Helps with muscle repair and maintenance whilst using the bar for convenient protein.
- With hydration/electrolyte support: If you’re snacking on the go, pairing with water or electrolyte drink ensures better nutrient absorption.
Think of the bar as a functional snack rather than primary recovery tool, stack accordingly.
Frequently asked questions (FAQ)
How many serves per box of Custard Protein Bars?
There are 12 bars in a box of Custard Protein Bars.
When is best to eat this bar?
Anytime you need a convenient 14–17g protein hit, post work-out, between meals or as a protein snack.
Is it vegan or vegetarian?
No, this bar contains milk, casein, whey and collagen in some flavours. It is not vegan.
What about sugar alcohols or sweeteners?
There are sugar replacements like maltitol used, so if you’re sensitive to sugar-alcohols or following a keto diet, check the flavour of your protein bar and read the label properly.
For athletes subject to testing, is it safe?
While Muscle Nation emphasises transparency, you should check for independent certification if you’re in a tested sport for any supplements you are looking to use.
Are Custard Protein Bars by Muscle Nation gluten free?
No, Custard Protein Bars by Muscle Nation are not gluten free and include many allergens, including wheat, gluten, milk, soy. and these allergens may be present, peanut, sesame, and tree Nuts.
Suggested use
Consume one bar when needed, post-workout, between meals, or as a convenient snack. You can pair the Custard Protein Bar by Muscle Nation with water or a low-calorie drink. Do not replace whole food meals entirely but use as part of a balanced nutrition strategy.
Our verdict on Custard Protein Bar by Muscle Nation
The Custard Protein Bar by Muscle Nation offers a delicious, functional snack option that hits the protein mark while delivering taste and texture beyond typical diet bars. It combines a custard-filled centre, high protein (14–17g depending on flavour), and reasonable macro profile, making it a smart choice for snack-time or between-meal support.
However, because it still includes coatings, sweeteners and moderate carbs, it should be treated as a smart snack rather than a purely “diet” bar. If you’re after flavour, convenience and quality protein in one bite, then yes, this bar is worth considering.