Easy Low-Carb Peanut Butter Fudge Recipe

If you’re looking for the perfect sweet indulgence while maintaining your low-carb lifestyle, this easy low-carb peanut butter fudge recipe is your ticket to satisfaction. Made with just a few accessible ingredients, this delightful treat will tickle your taste buds without breaking your diet. Get ready to experience the rich, creamy flavor of peanut butter fudge made easy and keto-friendly!
Growing up, my family always had a penchant for anything peanut butter. During the chilly winters, my grandmother would gather us around the kitchen island to make her famous fudge, a special treat that brought us so much warmth and comfort. I’ve carried this tradition forward, adapting her classic recipe to suit my low-carb lifestyle. Sharing this updated version feels like passing on a legacy with a modern twist.
Why You’ll Love This Recipe
This recipe holds a special place not only for its nostalgic value but also for its practicality and deliciousness. With only a handful of ingredients, it’s the perfect solution for quick and satisfying dessert cravings. This fudge is not only low-carb but also sugar-free, making it ideal for keto dieters looking to indulge without feeling guilty. Its creamy texture and robust peanut butter flavor make it irresistible even to those not following a low-carb diet.
Ingredients Notes
To ensure your fudge comes out perfectly every time, here are some tips on selecting the best ingredients. Opt for unsweetened natural peanut butter to keep the carb count low and avoid added sugars. You can substitute almond butter if peanuts are off your list. For sweeteners, use a powdered erythritol or stevia blend to maintain a smooth texture and appropriate sweetness without spiking blood sugar levels.
Recipe Steps
Step 1
Start by lining a small square baking pan with parchment paper, leaving a bit of overhang on the sides for easy removal later.
Step 2
In a medium saucepan over medium heat, melt your choice of butter until it’s fully liquid and slightly bubbling. Add in the natural peanut butter and stir until completely combined and smooth.
Step 3
Reduce the heat to low and add your powdered sweetener of choice. Stir continuously until the sweetener is fully dissolved and the mixture is thick and cohesive.
Step 4
Remove the mixture from heat and stir in a splash of vanilla extract for added depth of flavor. Let it cool for a few minutes before pouring it into the prepared baking pan.
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Step 5
Refrigerate the fudge for at least two hours or until fully set. Once firm, lift the fudge using the overhanging parchment paper, cut into squares, and enjoy.
Storage Options
To keep your fudge fresh, store it in an airtight container in the refrigerator for up to two weeks. For longer storage, place individual pieces in a freezer-safe bag and freeze for up to three months. When you want to indulge, simply allow them to thaw in the refrigerator overnight and enjoy.
Variations & Substitutions
Feel free to get creative with your fudge recipe! Add a half teaspoon of cinnamon for an extra warming spice, or mix in chopped nuts for some crunch. For those avoiding peanuts, almond or sunflower seed butter makes an excellent substitute, offering a unique twist to the traditional flavor.
Serving Suggestions
This low-carb peanut butter fudge is perfect for any occasion. Serve it at holiday gatherings, as a delectable post-dinner treat, or simply stash a few pieces for when sweet cravings hit. Pair it with a steaming cup of coffee for a delightful afternoon pick-me-up.
Frequently Asked Questions
Can I use other sweeteners instead of erythritol? Yes, you can use any powdered low-carb sweetener such as monk fruit sweetener or allulose. Just keep in mind that different sweeteners have varying levels of sweetness, so adjust according to your taste.
How can I tell if the fudge mixture is ready to be poured into the pan? The mixture is ready when it thickens to a point where it easily coats the back of a spoon. Ensure it’s smooth and free from any grainy texture, which indicates the sweetener has fully melted.
Is this recipe suitable for vegans? By substituting the butter with coconut oil or vegan butter, this recipe can be adapted into a vegan-friendly treat. The plant-based alternative will still give you that creamy, satisfying texture associated with fudge.
Having a quick and easy low-carb dessert at your fingertips is a real game-changer. Whether you’re catering to dietary restrictions or simply love the taste of peanut butter, this fudge is a must-try. Embrace its simplicity and savor every luscious bite of this delightful treat.

Easy Low-Carb Peanut Butter Fudge Recipe
Ingredients
Main Ingredients
- 1 cup natural creamy peanut butter unsweetened
- 8 tablespoons unsalted butter melted
- 1.5 cups powdered erythritol or sweetener of your choice
- 1 teaspoon vanilla extract
- 0.25 teaspoon salt to taste
Instructions
Preparation Steps
- Line an 8x8 inch baking dish with parchment paper, leaving a bit of overhang for easy removal.
- In a medium-sized mixing bowl, combine the peanut butter, melted butter, powdered erythritol, vanilla extract, and salt. Mix until smooth.
- Pour the mixture into the prepared baking dish, spreading it evenly using a spatula.
- Refrigerate for at least an hour or until the fudge is firm.
- Once set, lift the fudge out from the pan using the parchment paper overhang and cut it into squares.