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    Home » Desserts

    Keto peanut butter fudge

    Published: Apr 27, 2021 · Updated: Jul 17, 2021 by Anna · This post may contain affiliate links · This blog generates income via ads ·

    Jump to Recipe Jump to Video

    Soft with a creamy texture, this easy keto peanut butter fudge recipe is a low carb and gluten-free treat that is full of healthy fats and protein. It's perfect as a post work-out snack or just a sweet bite that you can enjoy with a cup of coffee.

    Square pieces of fudge with flaky salt on top served on a small round plate.
    Jump to:
    • Ingredients and substitutes 
    • Step by step directions
    • Topping ideas
    • Carbs in sugar-free peanut butter fudge
    • FAQ
    • More keto recipes
    • Recipe

    Ingredients and substitutes 

    Peanut butter - I use unsalted natural peanut butter. If you use a salted one, don't add extra salt to the mixture.

    Butter - Use unsalted butter of good quality.

    Sweetener - I use granulated sweetener from Sukrin (erythritol and stevia blend).

    Salt and vanilla extract - Optional, but highly recommended. 

    Protein powder - I find that protein powder (I use unflavored whey protein powder) keeps the fudge more stable at room temperature while making this low carb keto treat not only tasty, but nutritious. Peanut butter fudge made with protein powder will hold its shape at room temperature and won't melt when you hold it, the exception being on a really hot day. 

    Tower of two peanut butter fudge squares topped with flaky sea salt, one bite taken from the top one.

    Step by step directions

    Add the butter and sweetener into a medium saucepan. Heat over a medium heat until the butter has melted and the sweetener has dissolved completely. Then, remove the saucepan from the heat and add the peanut butter, salt, and vanilla extract. Mix with a whisk or spatula until well combined.

    Add the protein powder, mix again, and pour the fudge mixture into a loaf pan (9”x 5” x 3”/25cm x 11.5cm x 7cm) lined with a parchment paper. Optionally, top it off with flaky sea salt or other toppings of your choice before freezing it for 1-2 hours or until completely set.

    Remove our fudge from the freezer, cut into 14-16 even cubes, and serve.

    4 images collage picture showing how to make peanut butter fudge.

    Topping ideas

    Most of the time, I sprinkle some flaky sea salt on top before freezing this low carb fudge, but you can go with other options. Crushed nuts, shredded coconut, or sugar-free chocolate chips are all great toppings that will add a little bit extra deliciousness to your fudge. 

    Carbs in sugar-free peanut butter fudge

    After freezing, you should be able to cut the fudge into 14-16 even cubes. Each piece will be around 3g net carbs. 

    FAQ

    How long will homemade peanut butter fudge last in the fridge?

    Stored in an air-tight container, peanut butter fudge will last in the fridge for up to one week.

    Can I freeze peanut butter fudge?

    You can freeze it in an air-tight container for up to 2 months. Thaw overnight in the fridge before serving.

    Can I use another nut butter?

    Yes, you can easily replace peanut butter with almond or hazelnut butter.

    A hand holding one piece of peanut butter fudge topped with sea salt, one bite taken from it.

    More keto recipes

    ALMON FLOUR KETO PEANUT BUTTER COOKIES

    PUMPKIN PEANUT BUTTER COOKIES

    EASY KETO PEANUT BUTTER BALLS

    KETO FAT BOMBS

    Recipe

    Close up shot of a small round plate with many fudge squares topped with sea salt.

    Keto peanut butter fudge

    Soft with a creamy texture, this easy keto peanut butter fudge recipe is a low carb and gluten-free treat that is full of healthy fats and protein. It's perfect as a post work-out snack or just a sweet bite that you can enjoy with a cup of coffee.
    5 from 1 vote
    Print Pin Rate
    Course: Dessert, Snack
    Cuisine: American
    Keyword: Gluten-free fudge, Keto fudge, Keto snacks, Protein snacks
    Prep Time: 5 minutes
    Cook Time: 5 minutes
    Freezing: 1 hour
    Total Time: 1 hour 10 minutes
    Servings: 14 pieces
    Calories: 164kcal
    Author: Anna

    Equipment

    • loaf pan 9”x 5” x 3” (25cm x 11.5cm x 7cm)

    Ingredients

    • ½ cup 113g unsalted butter
    • ⅓ cup 65g granulated sweetener such as Sukrin
    • 1 cup 240g creamy peanut butter, unsweetened
    • Pinch of salt
    • 1 teaspoon vanilla extract
    • 2 tablespoon 10g whey protein powder, unflavored

    Instructions

    • Prepare a loaf pan (9”x 5” x 3”/25cm x 11.5cm x 7cm) by lining it with parchment paper. Set aside.
    • Add the butter and sweetener into a medium saucepan. Heat over a medium heat until the butter has melted and the sweetener has dissolved completely. Remove from the heat.
    • Add the peanut butter, salt, and vanilla extract and mix with a whisk or a spatula until well combined.
    • Add the protein powder, mix again, and pour into the loaf pan. Freeze for 1-2 hours or until completely set.
    • Remove from the freezer and the loaf pan and cut into 14-16 even cubes. Serve.

    Recipe video

    Notes

    NET CARB: 3g
    Store in an air-tight container in the fridge for up to 1 week.
    Freeze in an air-tight container for up to 2 months. Thaw overnight in the fridge before serving.
    Nutrition Facts
    Keto peanut butter fudge
    Amount Per Serving (1 piece)
    Calories 164 Calories from Fat 135
    % Daily Value*
    Fat 15g23%
    Potassium 98mg3%
    Carbohydrates 4g1%
    Fiber 1g4%
    Sugar 2g2%
    Protein 4g8%
    Vitamin A 202IU4%
    Calcium 10mg1%
    * Percent Daily Values are based on a 2000 calorie diet.

    This website, https://heretocook.com, offers nutritional information for recipes contained on this site. This information is provided as a courtesy and should not be construed as a guarantee. This information is a product of online calculators such as Cronometer.com and MyFitnesPal.com

    Tried this recipe?Mention @heretocook or tag #heretocook!

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    Comments

    1. Liana

      May 03, 2021 at 6:31 pm

      5 stars
      Very delicious! Taste like Reese’s peanut butter cups filling.

      Reply
      • Anna

        May 03, 2021 at 6:58 pm

        Exactly my thoughts!

        Reply

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    Hey there! My name is Anna and I am here to cook healthy meals that taste delicious. Here you’ll find low carb high fat, keto, paleo recipes for any occasion! Read More

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