Keto Fudge
Published December 14, 2025
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This keto fudge starts with a homemade sugar-free sweetened condensed milk, then comes together with chocolate chips, butter, vanilla, and salt to make a rich, silky candy that tastes like classic fudge. It’s just 5 ingredients, totally foolproof, and one of those recipes friends polish off before you even mention it’s sugar free and only 1.2 carbs per piece.
1 piece
32
Servings
64
Calories
5.3g
Fat
1.6g
Protein
1.2g
Net Carb
9.3g
Total Carbs
Disclaimer: The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.
I’ve spent years tinkering with keto candy recipes, from chewy sugar-free caramels to buttery toffee, and it’s something I genuinely love making, especially around the holidays. This time of year, my kitchen is usually a mess of chocolate, pans, and little taste tests happening way too often, because I can’t help myself when it comes to baking and homemade sweets.
This keto fudge is one of those recipes that feels extra special but is surprisingly simple. It starts with a homemade sugar-free sweetened condensed milk, which is the secret to getting that smooth, classic fudge texture without any graininess. From there, it’s just keto chocolate chips, butter, vanilla, and a pinch of salt melted together into a rich, silky candy that sets up beautifully and slices clean.
One thing I love about this recipe is how easy it is to customize. You can keep it plain and chocolatey, or stir in chopped walnuts if you like a little crunch, pecans work great too. I’ll often split the batch and add mix-ins to part of it so there’s something for everyone, which makes it perfect for holiday trays or gifting.
What really sets this fudge apart from a lot of other keto versions is how foolproof it is. There’s no simmering cream, no finicky steps, and no worrying about a gritty texture or a fudge that melts the second you touch it. It’s just five ingredients, rich enough that a small square actually feels indulgent, and always the first thing to disappear once it’s on the counter.
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Keto Fudge Ingredients
4 tablespoons unsalted butter, divided
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1/2 cup powdered sugar-free sweetener
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2 cups heavy whipping cream or ultra-filtered whole milk
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12 oz sugar-free chocolate chips
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1/4 teaspoon salt
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1 teaspoon vanilla extract
Keto Fudge Directions
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Make sugar-free condensed milk
Add butter, sweetener and milk or cream to a heavy bottom saucepan. Bring to a boil over medium heat while stirring occasionally. Reduce heat to low and simmer the mixture for 25-30 minutes or until the mixture has thickened and can coat the back of a spoon. Stir mixture occasionally and scraping the continuously to prevent a milky buildup from forming around the sides.
Ingredients
- 3 tablespoons unsalted butter
- 1/2 cup powdered allulose
- 2 cups heavy whipping cream or ultra-filtered whole milk
Quick Tip
You can make the sugar-free sweetened condensed milk ahead of time by pouring it into a storage container or mason jar, letting it cool at room temperature for about 30 minutes, then refrigerating it for at least 2 hours until thickened and ready to use. -
Prepare the pan
Line an 8x8 or 9x5 pan with parchment paper or foil, lightly grease it with butter, and set it aside.
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Melt chocolate
To the sweetened condensed milk, add the chocolate chips, butter, and salt and heat over low heat, stirring constantly and keeping the heat gentle so the chocolate doesn’t seize and ruin the texture of the fudge. Stir constantly until chocolate chips are completely melted and smooth and all ingredients are well combined.
Ingredients
- 12 oz sugar-free chocolate chips
- 1 tablespoons unsalted butter
- 1/4 teaspoon salt
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Pour fudge into pan
Once everything is fully melted, remove the pan from the heat, stir in the vanilla extract, then immediately pour the mixture into the prepared pan and smooth the top with a spatula.
Ingredients
- 1 teaspoon vanilla extract
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Refrigerate
Let the fudge cool completely and set for several hours until firm by placing it in the refrigerator, then slice and enjoy.
Quick Tip
For clean, even slices, use a sharp knife and wipe it clean between cuts, or warm the blade slightly to glide through the fudge without sticking.
