Low Carb Peanut Butter Fudge


This rich and creamy low carb peanut butter fudge tastes just like the kind Grandma used to make. Except Grandma wasn’t on a low carb diet and hers would send your blood sugars soaring. Sorry, Grandma, there’s a new fudge in town. 

(61 votes, average: 3.66 out of 5)
Low Carb Peanut Butter Fudge


  • 1/2 cup butter
  • 1/2 cup whipping cream
  • 1 cup creamy peanut butter
  • 1 tsp vanilla extract
  • 1 1/2 cup powdered Swerve Sweetener (or other powdered erythritol)
  • 1/4 cup peanut flour


  1. Line a 9x5 inch loaf pan with parchment paper.
  2. In a medium saucepan over medium heat, bring the butter and cream to a boil. Boil 2 minutes. Remove from heat and add the peanut butter and vanilla extract.
  3. Transfer to a large bowl. Beat in the powdered sweetener 1/2 cup at a time. The mixture will begin to separate and become clumpy, that’s okay.
  4. Use a rubber spatula to “paddle" the mixture together again, pressing it into the bowl and lifting, pressing and lifting. Sift the peanut flour over and continue to paddle until well combined. It should have the consistency of dough and not be liquid at all.
  5. Press the mixture evenly into the prepared loaf pan and refrigerate until set, at least 1 hour.
  6. Remove the parchment paper by the edges and cut the fudge into small squares.

Yield: 36 pieces, 18 servings

Cholesterol: 22mg

Food energy: 162 kcal

Total fat: 14.12g

Calories from fat: 127

Carbohydrate: 3.68g

Protein per serving: 3.65g

Total dietary fiber: 0.85g


Please note that erythritol contains carbs but studies show that for most people, those carbs don’t affect blood sugar. If you need to count the total carbs, please add 20g erythritol.

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16 Comments on "Low Carb Peanut Butter Fudge"

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Fay Jones

where would you get peanut flour , and could you use anything else ?


I bought my peanut flour from Amazon, but you could try using PB2 (powdered peanut butter). I think it is basically the same thing. I have seen it at Walmart. My husband and I LOVE this recipe. I just made a batch and rolled it into balls. It’s in the freezer now. I plan on dipping them in melted SF chocolate to make guilt free “Buckeyes”. :)


The PB2 has sugar in it. I would not use it myself as a substitute.


My mother and I made this recipe this evening and I must tell you when we tasted it we embarrassed and were in tears. For so long I have missed my mother’s fudge since we are both diabetic now. You have given us back so many memories. I am going back out tomorrow to buy more Swerve so we can share for the holidays. Thank you so much !!!


Can i use liquid stevia instead of powderer erythritol?


can you use other flour like coconut or almond?

Meri Kieffer

Did you hand beat in the powdered sweetener, or use an electric hand mixer?


Tried to make this tonight, at the very end before placing in the dish the butter separated out of mixture like magic.

How can I prevent this?


What is your favorite sweetener to use for these?


@Connie The grocery store near me has started selling peanut flour; in fact, I believe it’s made my Jif. You can also order PB2 online or find it at your nearest grocery store as well.

For the fudge, I cut back the sweetener to 3/4 cup (I like to taste as I go–can’t stand the taste of too much artificial sugar), and it came out perfectly! Will make again!


can anything be substituted for the peanut flour? I’ve never seen it.


You can buy it online from Southern Grace Farms.


Can this be made using almond flour instead.


I made mine with almond flour tonight and its GREAT


Thanks so much! That’s the only thing that I do not have! So I will try it with almond flour. Thanks again!


How did the almond flour turn out? I want to try this tonight.

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