The Ingredients
There are a couple of specialty ingredients you will have to buy to make this recipe work. Those are Whey Protein Isolate and Sukrin Syrups (US alternatives also include are Allulose Syrup or Vitafiber).
Whey Protein Isolate – I use Isopure WPI as it has a neutral flavour, no carbs and works perfectly in each of my recipes. Substitute a pea protein isolate for dairy-free Mars protein bar or another WPI brand of choice.
Sukrin Syrups – Sukrin Australia is the only retailer of Sukrin products. The syrups, both in clear and gold, are a great substitute for honey or glucose syrup and maple syrup or golden syrup.
Vitawerx Milk Chocolate is absolutely delicious! Available in both milk chocolate and white chocolate it is as close as you can get to eating the real thing but with ZERO sugar.
More Recipes To Try
For more keto sweets recipes here are just a few of my favourites. I might just have a “thing” for keto candy recipes after all.
- White Chocolate Snickers
- Vanilla Nougat Bar
- Butter Caramel Nougat Bar
- Cinnamon and Walnut Nougat Bar
- Mint Slice Biscuits
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Keto Mars Protein Bar
Equipment
Ingredients
Chocolate Nougat
- 180 g (6.5 oz) Clear Fibre Syrup
- 20 g (0.75 oz) dark chocolate
- 130 g (1.25 cups) whey protein isolate
- 1 tbsp (1 tbsp) MCT oil
Caramel
- 200 g (1 cups) Caramel Fibre Syrup
- 60 g (2 oz) butter
- 80 g (0.3 cups) thickened cream
Coating
- 140 g (5 oz) Sugar-free Milk Chocolate or dark chocolate (see recipe notes)
I used a silicone bar mould that is now discontinued. A silicone large icecube tray would be perfect for 32 x 4cm mars bites.
Instructions
Nougat
- Place the syrup and chocolate into a large heat-safe bowl and microwave for 1 minute. Stir to combine and melt chocolate.
- Combine chocolate mix with WPI and MCT oil and mix until combined. With a gloved hand massage mix until it is no longer grainy.
- Spoon or break off pieces and push into moulds (will make 32 x 4cm moulds). Set aside.
Caramel
- Place all caramel ingredients into a large heat-safe bowl. Heat on high for 3 minutes. Carefully remove from microwave stir mixture and return to microwave. Continue to heat at 1-2 minute intervals until mixture looks very bubbly when you take out and when stir becomes thicker and more viscose. At this point, you will definitely smell a caramel scent.
- Carefully spoon the hot caramel into your moulds. Refrigerate until set.
- Melt chocolate and thinly coat each mars bar.
Notes
Your Own Notes
Nutrition
Megan Ellam is an Australian keto recipes blogger and author of amazing keto cookbooks such as Slow Cook Keto, Keto Loco, The Healthy Family Keto Cookbook and Every Day Keto.
Megan has been following a ketogenic diet since being diagnosed with insulin resistance in early 2017.
42 responses to “Keto Mars Protein Bar”
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This looks amazing.
Is there any substitute for WPI? What is the reason for it in the recipe?
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They are protein bars Karen so that is why it is there. There really is no substitute as it creates the texture of the nougat.
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These look amazing! but something has happened and I cannot see the proper list of ingredients with their weight on the recipe card :< maybe they were links that now no longer exist? I have seen this on a couple of your older recipes that im begging to try out!!
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HI Janine, the recipe card is below. you just need to scroll down to it or use the jump to recipe button. The blog post contains the information about the specific ingredients, FAQs, substitutions etc. The recipe card is always at the bottom.
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These look amazing! Just wondering what syrup to use now? Appears the fiber syrup is no longer available?? Thanks-
Hey Robert you can simply use the Sukrin Gokd syrup which has replaced the previous fiber syrup.
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Hi Megan,
Thank you for your delicious Keto recipes, you are a star! One question can you point me in the direction of a silicon mould for the mars bars? I’m being strict and counting carbs so want the correct size but can’t find a 4cm silicon ice cube tray?
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Hi Deanna, I go a silcone mould from House. However if you just get an ice cube tray you can have 2 for 1 if they are just a 2cm tray
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Do you think instead of making the caramel you could use fibre caramel syrup? I’m just thinking out of pure convenience! -
Yum Yum Yum .. the best !! The caramel hits the spot hands down 🙌🙌🙌
Love your recipes Megan ❤️ -
It has been a very long time since I have eaten a real Mars Bar……these are so easy to make and taste exactly as I remember the real thing.-
I just made them a couple of days ago too Kate. Sooooo good!
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What moulds did you use?
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The ones I used were by Chefs Toolbox
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My nougat and caramel turned out perfectly! My coating on the other hand is what I’m struggling with 🙁 how do you melt the chocolate and coat the bars? Thanks for any help 😄-
I melt mine in the microwave for about 90 seconds then either dunk it or drizzle over
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Hi, I finally purchased the Isopure Whey Protein Isolate to makes these, only to realise that I don’t have MCT oil. Can you use melted coconut oil instead? Thanks!-
You can however if it is a firm set coconut oil it will make the nougat harder
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Would caramel work with coconut cream?
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Yes it would Joanna
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Oh, yeah. Amazing! I got my baking pack from Sukrin and made these IMMEDIATELY. I coated them with 1/3 Lindt 90% and 2/3 Well Naturally milk choc. I also had chocolate flavoured Whey Protein which worked well. Thank you! -
Seriously these Mars Bars look so darn good!! The photography is perfect and I want to go out right now and buy the ingredients to make them. Yum and yum and some more yum. Nice one Megan! Love the video and your Aussie accent!!-
Hahaha! I am about as Aussie as they come aren’t I. Lol. I am such a dag. Thanks Adrianne
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I’m not on a keto diet but trying to get back to paleo lifestyle. My question is if honey would work instead of the syrup?-
I am not sure Lin sorry. Honey is definitely not as thick as the fibre syrups.
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Hey Megan,
Just wondering what flavour of Isopure is best? Especially if I were to use this for other recipes.
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I just use the unflavoured one.
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This looks amaze! I’m hoping we have products here in nz to create these xx
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I made these and they are just soooooooo good. I used Lindt 90% dark chocolate for coating the bars and I love them 😍-
Glad you enjoyed them. The dark chocolate would cut a little of the sweetness as well
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Can you make it without the sukrin fiber and substitute another liquid?!
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In Australia we have nothing similar that is a keto product
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I so hope I have enough Sukrin fibre gold left to make these on the weekend.
Megan you are amazing.-
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Let me know what you think and give it a rating when you taste it Suzanne
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hi this looks fantastic… I dont use protein isolate, what can I use instead please??? I really want to make this!!!
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You can try a pea protein, or a whey. But there is no other substitutes in this recipe for protein powder
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