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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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

Why is my 3 ingredient fudge not setting? ›

Why won't my 3 ingredient fudge set? This often happens when the condensed milk and chocolate chip mixture isn't hot enough to start. Everything must be completely melted before it is transferred to the pan to cool.

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.

Why won't my condensed milk fudge set? ›

If you didn't reach the correct temperature during the cooking process, it might not set properly. Use a candy thermometer to ensure that you reach the recommended temperature. Overcooking or Undercooking:Solution: Cooking the fudge for too long or too short a time can affect its texture.

What peanut butter has the least amount of carbs? ›

Brand/ProductNet CarbsScore
Smart Balance Creamy Peanut Butter5g7
Jif Creamy Peanut Butter5g7
Skippy Creamy Peanut Butter4g7
Justin's Classic Peanut Butter5g9
2 more rows
6 days ago

How to fix fudge that won't harden? ›

I generally heat my syrup up to 235° F and let carry-over do the rest of the work. If it's overcooked (resulting in grainy fudge) or undercooked (resulting in poor setting) all you really need to do is add a bit of cream, reheat the fudge to the target temperature, and let it set again.

What to do if peanut butter fudge doesn t set? ›

OPTION 3) Sieve together some powdered sugar and cocoa powder, and gradually work this into your unset fudge until it reaches the consistency of dough, then roll out and cut into squares, or shape into balls and then roll in powdered sugar (roll the balls in icing sugar, not yourself).

Why did my peanut butter fudge turn out grainy? ›

If the sugar crystals are not properly dissolved before cooling, they can create a gritty texture. To avoid this, ensure that you stir the fudge mixture consistently and remove any sugar crystals that form on the sides of the pan using a wet pastry brush.

How do you fix failed fudge? ›

To fix soft fudge or hard fudge, simply follow these easy steps: Scrape the fudge back into a large saucepan and add 1 1/2 cups of water. Stir the fudge over low heat until it dissolves. Carefully taste the mixture, as the water probably diluted the flavor.

What happens if you don't beat fudge long enough? ›

However, if you don't beat it at all, the crystals won't form properly, so your fudge won't set. If you forget to beat the fudge, try heating it back up over low heat, then beat it once it's slightly softened. If you beat the fudge too soon, the crystals will be too large, and the fudge will be grainy.

How do you add moisture to fudge? ›

Cut the fudge into small pieces around one inch and put it on the plate and place each fudge with the distance in between. Keep a bowl of water inside the microwave along with the fudge to create moisture for the pieces to inhale. Next, microwave the fudge pieces for just 10 seconds.

How much peanut butter can I eat a day on keto? ›

You can enjoy two tablespoons of this popular spread at a time, even up to five tablespoons, without going over 50 grams of carbs in a day (the upper limit for the standard keto diet) and getting kicked out of ketosis. Also, this amount should leave room for other foods even after eating peanut butter.

Can I eat peanut butter everyday on keto? ›

Peanut butter can definitely be part of a keto diet, but it's best to stick to plain options that are free of extra flavors and sweeteners. Almond butter is a good choice, too, and it's slightly lower in carbs. Additionally, you should be mindful of your portion size if you're trying to lose weight.

How many carbs a day on keto? ›

The ketogenic diet typically reduces total carbohydrate intake to less than 50 grams a day—less than the amount found in a medium plain bagel—and can be as low as 20 grams a day. Generally, popular ketogenic resources suggest an average of 70-80% fat from total daily calories, 5-10% carbohydrate, and 10-20% protein.

How do I fix runny fudge? ›

If your fudge is soft or runny, it probably didn't come up to a high enough temperature while it was cooking. Put it back into the saucepan and add 1–2 US tbsp (15–30 ml) of 35% fat whipping cream. Stir the fudge as it heats, but only until the sugar in the chocolate is completely melted again.

Why is my fudge not working? ›

However, homemade fudge doesn't always set up into a semi-firm, melt-in-your-mouth confection. If your fudge doesn't firm up after a few hours, you either have too high an amount of liquid to sugar, or your mixture hasn't reached the soft-ball stage. Using a candy thermometer can help home cooks avoid this problem.

How to fix broken 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.

How to make soft fudge set? ›

If your fudge fails to harden in the fridge, it means that you probably didn't cook it to the right temperature. Fudge is a candy, and that means it is extremely picky about temperature - fudge must be cooked to precisely 237–239 degrees Fahrenheit so that sugar forms the desired consistency when cooled.

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