Sugar-free peanut butter fudge

My youngest, Lily, has a sweet tooth that rivals my own. For years, I struggled to find a treat that felt like a real indulgence but didn’t send her bouncing off the walls. Then, one rainy afternoon, I threw together a desperate combination of peanut butter and a few pantry staples.

The result was a creamy, rich, utterly satisfying fudge that disappeared in minutes. Now, this Sugar-free peanut butter fudge is our go-to dessert for movie nights, lunchboxes, and quiet afternoons. I love that it delivers that classic peanut butter fudge taste without any refined sugar.

Trust me, you won’t even miss it. Let me show you how to make the best Sugar-free peanut butter fudge at home.

WHY YOU’LL LOVE THIS SUGAR-FREE PEANUT BUTTER FUDGE

This isn’t just any candy. Sugar-free peanut butter fudge is incredibly simple to make. You only need a few basic ingredients.

It comes together in minutes on the stovetop or microwave. No candy thermometer required. It’s also naturally low-carb and keto-friendly.

This Sugar-free peanut butter fudge satisfies those cravings without the guilt. Everyone at your table, from kids to grandparents, will ask for a second piece. It’s the perfect little sweet indulgence.

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INGREDIENTS YOU’LL NEED

For this foolproof Sugar-free peanut butter fudge, you just need a few pantry staples.

Ingredient	Amount	Notes
Natural Peanut Butter	1 cup	Use creamy or chunky, no sugar added.
Unsalted Butter	1/2 cup	Cut into cubes for even melting.
Powdered Erythritol	1/2 cup	This gives the sugar-free peanut butter fudge its sweet, smooth texture.

SUBSTITUTIONS & VARIATIONS

You can easily change this Sugar-free peanut butter fudge. Use almond butter or sunflower seed butter for a different twist. For a vegan Sugar-free peanut butter fudge, replace the butter with coconut oil.

Add a handful of sugar-free chocolate chips before chilling. A sprinkle of cinnamon or a dash of cayenne also tastes fantastic. The possibilities for Sugar-free peanut butter fudge are endless.

You can easily change this Sugar-free peanut butter fudge. Use almond butter or sunflower seed butter for a different twist. If you’re short on time, try this Sugar-Free Fudge (5 Minutes) for another quick treat.

STEP-BY-STEP INSTRUCTIONS

Making this Sugar-free peanut butter fudge is incredibly straightforward.

1. Melt the Base: In a medium saucepan over low heat, combine the peanut butter and butter. stir constantly until completely smooth and melted.

2. Sweeten the Mix: Remove the pan from the heat. Immediately stir in the powdered erythritol, vanilla extract, and salt. Mix very well until the Sugar-free peanut butter fudge batter is thick and glossy.

3. Set the Fudge: Pour the mixture into a parchment-lined 8×8 inch baking dish. Spread it evenly with a spatula.

4. Chill to Perfection: Refrigerate the Sugar-free peanut butter fudge for at least 1 hour, or until completely firm.

5. Slice and Serve: Lift the set Sugar-free peanut butter fudge out of the pan using the parchment. Cut into 16 small squares.

PRO TIPS FOR SUCCESS

Making perfect Sugar-free peanut butter fudge is easy with these tips. First, do not overheat the mixture. Low and slow is key.

Second, ensure you stir the powdered sweetener in thoroughly. Lumps can form otherwise. Finally, be patient.

The Sugar-free peanut butter fudge needs a full hour in the fridge to set properly. Do not rush this step.

Making perfect Sugar-free peanut butter fudge is easy with these tips. First, do not overheat the mixture. Low and slow is key. For a hearty breakfast to enjoy with your fudge, check out this Amish Baked Oatmeal Recipe.

STORAGE & REHEATING TIPS

Store your Sugar-free peanut butter fudge in an airtight container. Keep it in the refrigerator for up to two weeks. It stays perfectly firm and creamy.

You can also freeze this Sugar-free peanut butter fudge. Wrap it tightly in plastic wrap and foil. It freezes beautifully for up to three months.

Thaw in the fridge before serving. There is no need to reheat.

WHAT TO SERVE WITH THIS RECIPE

Sugar-free peanut butter fudge is wonderful on its own. For an extra special treat, serve it with a side of fresh berries. A dollop of homemade whipped cream is also lovely.

It pairs perfectly with a cup of hot coffee or a glass of unsweetened almond milk. Sugar-free peanut butter fudge also makes a beautiful homemade gift.

Sugar-free peanut butter fudge is wonderful on its own. For an extra special treat, serve it with a side of fresh berries. A dollop of homemade whipped cream is also lovely. If you love fruit desserts, you’ll adore this Rhubarb Strawberry Jelly Recipe.

FAQS

Can I use regular sugar?

Yes, you can substitute the powdered erythritol with an equal amount of powdered regular sugar. This will no longer be Sugar-free peanut butter fudge, but it will work.

Why is my fudge oily?

This can happen if you overheat the peanut butter or butter. Use low heat and remove the pan immediately. Also, ensure you stir the powdered sweetener in completely.

Can I use crunchy peanut butter?

Absolutely. Chunky peanut butter adds a lovely texture to Sugar-free peanut butter fudge. Just use a natural brand without added sugar.

Sugar-free peanut butter fudge is a modern adaptation of traditional fudge, created to reduce added sugar for dietary preferences like low-carb eating. It relies on sugar substitutes such as erythritol to achieve sweetness without the glycemic impact of table sugar. Discover more about the chemistry of sugar substitutes and their role in contemporary desserts.

NUTRITION INFORMATION (PER SERVING)

This recipe makes 16 servings. Values are for one piece of Sugar-free peanut butter fudge.

Nutrient	Amount
Calories	115
Total Fat	11 g
Saturated Fat	4 g
Protein	4 g
Total Carbohydrates	3 g
Fiber	1 g
Sugar Alcohols	2 g
Net Carbs	0 g