Keto Peanut Butter Fudge - Healthy Recipes Blog (2024)

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Last updated: · Recipes developed by Vered DeLeeuw and nutritionally reviewed by Rachel Benight MS, RD · This website generates income via ads and uses cookies.

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This wonderfully creamy and decadent keto peanut butter fudge is so delicious and very easy to make.

It's made with only six simple ingredients and contains no powdered sugar or condensed milk.

Keto Peanut Butter Fudge - Healthy Recipes Blog (1)

If you love peanut butter and creamy treats, you are going to love this recipe (and you should also try these keto fat bombs!).

Creamy, fudgy, and irresistible, it is very difficult to stop at one square!

But try: take one square out of the freezer, and savor it slowly, taking small bites and letting them melt in your mouth. If you enjoy it slowly, you'll see how satisfying it really is.

Jump to:
  • Ingredients
  • Instructions
  • Expert tip
  • Frequently asked questions
  • Variations
  • Serving suggestions
  • Storing leftovers
  • Related recipes
  • Foodie Newsletter
  • Recipe Card

Ingredients

You'll only need a few simple ingredients to make this keto peanut butter fudge. The exact measurements are included in the recipe card below. Here's an overview of what you'll need:

  • Creamy peanut butter: I use natural peanut butter. The only ingredients are peanuts and salt.
  • Unsalted butter: I'm partial to creamy European butter because it's so delicious. But any butter will be great.
  • Vanilla extract: Try to use the real thing - pure vanilla extract - and not the artificially flavored stuff. The difference in flavor is quite pronounced in uncooked recipes.
  • Sea salt: Adds an interesting layer of flavor to the fudge.
  • Sweetener: I use stevia. You could probably use a powdered sweetener instead.
  • Coconut flour: This excellent flour substitute helps to thicken and stabilize the fudge.
Keto Peanut Butter Fudge - Healthy Recipes Blog (2)

Instructions

It's ridiculously easy to make this keto peanut butter fudge! It's one of the easiest keto desserts on this website. The detailed instructions are in listed the recipe card below. Here are the basic steps:

  • You start by melting the ingredients (except for the coconut flour) over low heat.
  • Then, you whisk them until smooth. Off heat, stir in the coconut flour.
  • Transfer the mixture to a wax paper-lined pan. Freeze it for 90 minutes, then cut it into squares.
Keto Peanut Butter Fudge - Healthy Recipes Blog (3)

Expert tip

Right after making it and cutting it into squares, this fudge is a bit soft. It actually improves the next day, after an overnight stay in the fridge. So it's not a bad idea to make it the day before you plan on enjoying it.

Frequently asked questions

Why do you add coconut flour?

This fudge is made without the large amounts of powdered sugar that most fudge recipes contain because it helps stabilize and thicken them.

Instead, I use a small amount of coconut flour. Even with coconut flour, this fudge is softer than traditional ones. So depending on what texture you prefer, you might want to keep it in the freezer.

At the very least, you should keep it in the fridge, in an airtight container. Take it out right before you plan to eat it. It will soften quickly.

Can I use a peanut butter spread in this recipe?

Maybe, but I haven't tested that. I use natural peanut butter. The only ingredients are peanuts and salt, and it's the type of peanut butter that you should stir well, then refrigerate.

It's best to use a freshly opened jar when making this recipe. I find that the peanut butter at the bottom of these jars is often too dry, even if you've stirred it thoroughly.

Can I use a different sweetener?

Yes. The amount of stevia glycerite I use equals about 3 tablespoons of sugar. Make sure to use a powdered sweetener to keep the texture smooth.

Variations

I love this recipe as is and almost always make it as written. But in case you'd like to vary the basic recipe, here are a few ideas for you:

  • Add 2 tablespoons of unsweetened cocoa powder and increase the sweetener to 4 tablespoons (or ¾ teaspoon of stevia glycerite).
  • Add a pinch of cinnamon. Proceed with caution on this one! One of my kids loves this flavor combination; the rest of us are lukewarm and prefer the original version.
  • Melt a few squares of dark chocolate in the microwave (plus a teaspoon of avocado or coconut oil) and drizzle them on the mixture after it's set. Freeze again for about 30 more minutes to set the chocolate drizzle, then cut the fudge into squares.

Serving suggestions

These fudgy squares are perfect for dessert! They also work as a quick afternoon pick-me-up.

When I'm feeling extra indulgent, I top a square with a dollop of chocolate whipped cream... mmm good!

Storing leftovers

You can keep this fudge in the fridge, in an airtight container, for up to a week. Or in the freezer, in a well-sealed container, for up to three months.

Keto Peanut Butter Fudge - Healthy Recipes Blog (4)
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Recipe Card

Keto Peanut Butter Fudge - Healthy Recipes Blog (9)

4.97 from 88 votes

Pin Recipe Print Recipe

AMAZING Keto Peanut Butter Fudge

Creamy and decadent keto peanut butter fudge is delicious and very easy to make.

Prep Time10 minutes mins

Cook Time5 minutes mins

Rest time1 hour hr 30 minutes mins

Total Time1 hour hr 45 minutes mins

Course: Dessert

Cuisine: American

Servings: 25 squares

Calories: 124kcal

Author: Vered DeLeeuw

Ingredients

  • 1 ½ cups natural creamy peanut butter (24 tablespoons, 384g)
  • 6 tablespoons unsalted butter
  • 1 teaspoon vanilla extract
  • ½ teaspoon sea salt
  • ½ teaspoon stevia glycerite (equals about 3 tablespoons of sugar)
  • 2 tablespoons coconut flour

Instructions

  • Line a square 8-inch pan with wax paper.

  • In a medium saucepan over low heat, add the peanut butter, butter, vanilla, salt and stevia.

  • Whisk with a fork until smooth.

  • Remove from heat and whisk in the coconut flour.

  • Using a rubber spatula, pour the mixture into the prepared pan.

  • Cover and place in the freezer until set, at least 1 hour and preferably 90 minutes.

  • Cut into 25 squares and serve. Keep leftovers in the fridge or in the freezer, in an airtight container.

Video

Notes

  1. Right after making it and cutting it into squares, this fudge is a bit soft. It actually improves the next day, after an overnight rest in the fridge. So it's not a bad idea to make it the day before you plan on enjoying it.
  2. It's best to use a freshly opened peanut butter jar when making this recipe. I find that the peanut butter at the bottom of these jars is often too dry, even if you've stirred it thoroughly.

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Nutrition per Serving

Serving: 1square | Calories: 124kcal | Carbohydrates: 4g | Protein: 4g | Fat: 10g | Saturated Fat: 3g | Sodium: 67mg | Fiber: 2g | Sugar: 1g

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Disclaimers

Cup measurements refer to the standard American cup, which is 240 milliliters. Most of my recipes are low-carb (or keto) and gluten-free, but some are not. Please verify that a recipe fits your needs before using it. Recommended and linked products are not guaranteed to be gluten-free. Nutrition info is approximate, and the carb count excludes non-nutritive sweeteners. Nutrition info may contain errors, so please verify it independently. Recipes may contain errors, so please use your common sense when following them. Please read these Terms of Use carefully before using any of my recipes.

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More Low-Carb Desserts

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About the Author

Keto Peanut Butter Fudge - Healthy Recipes Blog (20) Vered DeLeeuw, LL.M., CNC, has been following a low-carb real-food diet and blogging about it since 2011. She's a Certified Nutrition Coach (NASM-CNC), has taken courses at the Harvard School of Public Health, and has earned a Nutrition and Healthy Living Certificate from Cornell University. Her work has appeared in several major media outlets, including Healthline, HuffPost, Today, Women's Health, Shape, and Country Living. Click to learn more about Vered.

Reader Interactions

Comments

    Leave a Comment

  1. ljc

    Keto Peanut Butter Fudge - Healthy Recipes Blog (21)
    This was great! Even though it had the stevia glycerite (which I have found leaves an aftertaste), it did not do so in this recipe. Well, maybe just a tiny bit, but not enough to affect the taste or my enjoyment of it.

    Reply

    • Vered DeLeeuw

      Wonderful! I'm so glad you enjoyed this fudge!

      Reply

Keto Peanut Butter Fudge - Healthy Recipes Blog (2024)

FAQs

What is the secret to good fudge? ›

Tips for Making Fudge
  • Monitor the Temperature with a Candy Thermometer. If you end up with soft fudge that turns into a puddle in your hands or hard fudge that is a bit reminiscent of a crunchy candy, improper temperature is likely to blame. ...
  • Avoid Stirring Once the Mixture Comes to a Simmer. ...
  • Beat Thoroughly.
Mar 8, 2023

How many carbs in a piece of peanut butter fudge? ›

Homemade Peanut Butter Fudge (1 piece) contains 12.4g total carbs, 12.3g net carbs, 1.1g fat, 0.6g protein, and 62 calories.

Why is my peanut butter fudge not hard? ›

The main reason is that your Fudge has not reached the optimum temperature. If your mixture only reaches 110 or 112 degrees Celsius it will always be soft. That's why we recommend investing in a sugar thermometer.

What is the secret to smooth fudge that is not gritty? ›

Once a seed crystal forms, it grows bigger and bigger as the fudge cools. A lot of big crystals in fudge makes it grainy. By letting the fudge cool without stirring, you avoid creating seed crystals.

What makes high quality fudge? ›

You have to control two temperatures to make successful fudge: the cooking temperature AND the temperature at which the mixture cools before stirring to make it crystallize. Confectionery experiments have shown that the ideal cooking temperature for fudge is around 114 to 115 °C (237 to 239 °F).

Why is my peanut butter fudge dry and crumbly? ›

The amount of time you cook fudge directly affects its firmness. Too little time and the water won't evaporate, causing the fudge to be soft. Conversely, cook it too long and fudge won't contain enough water, making it hard with a dry, crumbly texture.

Is no sugar added peanut butter low carb? ›

Sticking to natural, unsweetened peanut butter is a great option, especially if you're on a very low carb diet. It contains fewer carbs than sweetened varieties, but still has lots of protein and healthy fats.

How many carbs are in peanut butter for Keto? ›

Is peanut butter keto-friendly?
Smooth peanut butter ( 3 )Reduced fat peanut butter ( 6 )
Calories191166
Total carbs7 grams11 grams
Fiber2 grams2 grams
Net carbs5 grams9 grams
Aug 5, 2022

How many calories are in keto fudge? ›

There are 124 calories in 1 piece of Keto Fudge. * The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet.

Why is my peanut butter fudge chewy? ›

If the fudge is very soft and slightly chewy then it is possible that it did not quite cook to soft ball stage and next time the mixture should be cooked to a slightly higher temperature (soft ball is 112-116c/235-240F and a sugar or candy thermometer can help).

Why does my peanut butter fudge taste grainy? ›

– There are a number of reasons why the fudge was grainy. It might be that you haven't dissolved all the sugar before boiling the fudge mixture. It could be that there just wasn't enough fluid or fat to enable the sugar to dissolve or it might even be that the fudge wasn't beaten long enough or hard enough.

Do you store fudge in the refrigerator? ›

Fudge is best stored at room temperature for 2 to 3 weeks wrapped up in its original wax paper. NEVER REFRIGERATE your fudge as this will draw out the moisture and leave you with dry, crumbly fudge.

How do you fix peanut butter fudge that didn't set? ›

To fix it, you can reheat the fudge mixture over low heat and continue cooking until it reaches the proper temperature. Be sure to use a candy thermometer to monitor the temperature accurately. Alternatively, you can try to salvage chewy fudge by mixing it into ice cream or using it as a topping for desserts.

Should I stir fudge while boiling? ›

Stir the ingredients to dissolve the sugar until the mixture comes to a boil. If your recipe uses milk, stirring will keep the mixture from curdling. But once it reaches about 236–238 degrees F/113–114 degrees C (the "soft-ball" stage), do not stir it or even shake the pan.

How do you fix messed up fudge? ›

Pour the fudge back into your pan, and add about a cup of water to it, along with a tablespoon or two of evaporated milk, whipping cream, or whatever cream you're using. Some people skip the water and just add cream to the mixture to reheat.

Should you stir fudge constantly? ›

It is important to stir constantly with a wooden spoon until the mixture starts to thicken and its surface starts to look dull or matte. Now is the time to stop beating and pour the fudge into a mould. Another tip: Do not scrape the sides of the pan or the spoon used for stirring.

What does cream of tartar do in fudge? ›

Cream of tartar is used in caramel sauces and fudge to help prevent the sugar from crystallizing while cooking. It also prevents cooling sugars from forming brittle crystals, this is why it's the secret ingredient in snickerdoodles!

What does soft ball mean when making fudge? ›

making of fudge

termed in kitchen parlance the soft ball stage, that point between 234 and 240 °F (112 and 115 °C) at which a small ball of the candy dropped in ice water neither disintegrates nor flattens when picked up with the fingers.

Should fudge be soft or crumbly? ›

Soft. Crumblyness is considered a fault in fudge. It means the sugar crystalized.

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