This Keto chocolate peanut butter fudge is insanely creamy and has only four ingredients.
This fudge is one of the first recipes I posted on my website back in 2016. It was time to give it an update with more tips and details. The recipe itself was perfect as it is and remains unchanged.
I still love the creamy, chocolatey, nutty fat-fuelled goodness of this fudge and make it regularly.
Just like my cocoa fat bombs, keto peanut butter fudge or Chocolate Walnut Keto Fat Bombs, this fudge is perfect as a sweet keto snack in the afternoon or post-dinner.
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Ingredients
Traditional fudge is made with condensed milk. I have an amazing sugar free condensed milk recipe and my keto fudge is made with condensed milk.
But, this chocolate peanut butter fudge recipe contains butter to make it extra creamy.
Here are the ingredients I used:
- Butter - I chose unsalted butter. However, salted butter would give the fudge an additional flavour dimension.
- Peanut butter - Ideally, this should only contain one ingredient - peanuts. Supermarket brands often add unnecessary fillers such as palm oil or (gasp) sugar. I like the Meridian brand.
- Dark chocolate - I used Lindt chocolate with 90% cocoa solids. It contains only 7 grams of sugar per 100g bar. Considering you use one bar of chocolate to make the 30 fudge squares, it's fine by my book.
- Powdered Sweetener - Any zero-carb sugar substitutes work, such as erythritol, xylitol, allulose or Bocha Sweet.
Instructions
It is really simple to make a keto chocolate fudge. Here are the basic steps:
Step 1: Melt the butter and the chocolate. You can do this in the microwave in 30-second bursts. Or, melt them in a saucepan on the stove over low heat.
Step 2: Stir in the peanut butter and powdered sweetener.
Step 3: Pour the mixture into a small container lined with parchment paper and freeze until set.
Step 4: Cut into squares with a sharp knife.
Expert Tips
Use powdered sweetener. This way, you avoid ending up with gritty fudge. Erythritol-based sweeteners don't melt like sugar and re-crystallise as they cool.
Adjust the sweetness. Always taste the fudge mixture and add more sweetness if desired. I don't have much of a sweet tooth any more. You may prefer things a little sweeter.
Warm the knife blade by holding it under running hot water. This makes it easy to cut the squares.
Recipe Variations
Keto chocolate peanut butter fudge can be made with smooth or crunchy peanut butter.
Or give it a go with almond butter (and just rename it).
You could add a pinch of salt for an extra kick.
During the colder months, adding cinnamon or cardamom will give the sugar free fudge a festive note.
Recipe FAQs
Of course. If you decide to use unsweetened chocolate, make sure you increase the amount of sweetener accordingly.
Yes. Since sugar-free chocolate chips such as Lily's already contain sweeteners, you may not need the additional sugar substitute in the recipe.
Use coconut oil instead of butter. Choose refined coconut oil over unrefined coconut oil as it does not have a strong coconut flavor. Be aware that coconut oil is softer than butter and you have to store the fudge in the freezer rather than the fridge.
Because of its high fat content, the fudge is incredibly satisfying. One square contains 1.2 g net carbs. 2 squares would make a generous and filling keto snack.
Toppings
Why not decorate your fudge to make it taste even better? Here are a few options to choose from:
- Peanuts - for a bit of crunch
- Chopped nuts such as walnuts or pecans
- Unsweetened desiccated coconut
- Freeze-dried raspberries - for a colour pop
Storage
You can keep this low carb fudge in an airtight container in the fridge for up to 3 weeks.
Or, keep it in the freezer ready for when you feel the need for a tasty, guilt-free pick-me-up. In the freezer, it stays fresh for up to 3 months.
I love to have a freezer full with useful (=prepared) dishes for those days when you are after a quick fix, so that's where my fudge lives. It tastes fantastic frozen as well as thawed, which brings out its full glorious creaminess.
Related Recipes
- Keto Bounty Bar Chocolate Bark1 Hours 5 Minutes
- Kinder Milk Slice32 Minutes
- Keto Coconut Bars25 Minutes
- Low Carb Protein Bars Recipe30 Minutes
Tried this recipe? Give it a star rating below!
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Recipe
Keto Chocolate Peanut Butter Fudge
from Sugar Free LondonerNote: The servings slider only changes the first amount in each line and not any subsequent amounts. Please make your own calculations where necessary.
Ingredients
- 3.5 oz butter 100g, unsalted
- ¾ cup peanut butter 200g
- 3.5 oz dark chocolate 100g (I used 90% cocoa solids)
- 2 tablespoon powdered sweetener or more, to taste
- optional: 1 teaspoon vanilla extract
Instructions
- Melt the butter and the chocolate. You can do this in the microwave in 30-second bursts. Or, melt them in a saucepan on the stove over low heat.
- Remove the mixture from the heat. Stir in the peanut butter and powdered sweetener.
- Pour the mix into a small container lined with parchment paper and freeze it for 30 minutes or until just set.
- Remove the container with the fudge from the freezer. Lift the fudge in the parchment paper and place it on a chopping board. Warm a knife blade under hot water and cut the fudge into squares.
- Store the fudge in an airtight container in the freezer or in the fridge.
stacie
would almond butter work instead?
Katrin
Yes, any nut butter would work. Enjoy!
Laura
Well now these are absolutely delicious! So incredibly moreish that I’m going to struggle not to eat them all! Rich, chocolately goodness! I didn’t have any vanilla essence so used almond instead, gives it a little something extra 🙂
Patricia
In USA we don't use gram measurements so what is the measurement for 100g of chocolate? # of squares? I'd love to try making this (have the erythritrol on order from Amazon)
Katrin
Hi Patricia, 100g is the same as 3.5 ounces. I hope this is helpful?
Dee
Can’t wait to make this recipe.
Katrin
Great!! Shoot me a comment with your verdict when you've tried it!
Stephanie
If I don't have powdered can I use the granuals instead? Would it be the same amount?
Katrin
As the mixture is quite liquid in the beginning, powdered sweetener does work better. The granules are more likely to sink to the bottom and you'll end up with super-sweet bits. You could try blitzing your granules in a food processor or with a stick blender to get them smaller. Alternatively, you could use stevia glycerite (liquid stevia) if you have it. It'll be around the same amount whether it's granulated or powdered - just adjust it to how you like it.
Cathy Piscitello
just go ahead and put the granules In the blender and it will powder. Takes less than a minute!
Michelle @ Brown Butter and Biscuits
This fudge looks incredible! You can't beat a chocolate-peanut butter combo! Thanks for the recipe!!
Michele
My husband was recently diagnosed as pre diabetic.... so Im looking for sugar free recipes. Can you tell me where I can get the erythritol powder?
Katrin
Hi, Sukrin and Natvia are sold at Waitrose. You can also get erythritol at health food stores such as Planet organic or wholefoods
Anna
If you don't have a nearby health foods store, they'll definitely have it on Amazon (as always).
Taylor @ The Girl on Bloorq
OMG this fudge looks unreal!!! I don't know that you need to even call it freezer fudge because I could eat a whole batch of this in one sitting! LOL
Katrin
That's the one danger with it!!
Amy
Peanut butter & chocolate are so classic! And the texture of this fudge looks wonderful!
Katrin
You can't go wrong with peanut butter and chocolate!
Elaine @ Dishes Delish
I love fudge and this looks like a must make! Thanks for sharing it!
Sarah
This fudge looks easy and delicious! Thanks for linking to my recipe!