This velvety smooth Peanut Butter Fudge is rich, creamy and packed with sweet peanut butter flavor in every bite. Easy to make, sugar-free, low-carb, it's the perfect sweet treat for kids and adults alike.

Jump to:

• ❤️ Why You'll Love This Peanut Butter Fudge Recipe
• 🛒 Ingredients for Sugar-Free Peanut Butter Fudge
• 🔪 How to Make Low Carb Peanut Butter Fudge
• 💡 Tips for Making Keto Fudge
• ☑️ Storage Instructions
• 🔄 Substitutions and Additions
• Why Isn’t My Fudge Setting?
• Can I Use Almond Butter Instead?
• How Do I Avoid Grainy Fudge?
• Is This Fudge Gluten-Free?
• 🍽️ More Tasty Peanut Butter Treats

❤️ Why You'll Love This Peanut Butter Fudge Recipe

• Rich sweet peanut butter flavor
• Creamy texture
• Easy to make with just a few ingredients
• Sugar-free and low carb friendly
• Perfect sweet treat for kids

If you’re a peanut butter fan, you're going to love this easy Peanut Butter Fudge. It’s rich, creamy, and loaded with delicious peanut butter flavor that hits the spot every time. The best part is you only need a few simple ingredients, and there’s no baking involved. Just mix, chill, and enjoy.

This fudge is a great treat to keep in the fridge for those times when a sweet craving sneaks up. It sets perfectly, has a smooth, melt-in-your-mouth texture, and has the most amazing classic peanut butter flavor without loading up on sugar. Whether you’re enjoying a quick snack or sharing it with friends, this fudge is a must-have for anyone sticking to a sugar-free way of eating.

If you love this fudge recipe, you should also check out this Almond Joy Fudge recipe.

🛒 Ingredients for Sugar-Free Peanut Butter Fudge

• Peanut butter
• Butter
• Mascarpone cheese (or cream cheese)
• Monk fruit/allulose
• Brown Monk fruit/allulose
• Vanilla extract

*Exact measurements are listed in the recipe card below.

🥣 Recommended Tools

• Saucepan
• 9" Loaf pan
• Whisk
• Parchment paper

🔪 How to Make Low Carb Peanut Butter Fudge

Add the butter to a saucepan over low heat and once melted, add in both sweeteners.

Stir until they have dissolved, then add in the peanut butter and mascarpone cheese and continue stirring.

Once melted and well combined, turn off the heat and whisk in the vanilla extract.

Once melted and well combined, turn off the heat and whisk in the vanilla extract.

Pour the mixture into a 9” loaf pan lined with parchment paper (for easy removal).

Chill in the fridge for at least 4 hours or until the fudge has fully set.

Cut into chunks before serving.

💡 Tips for Making Keto Fudge

• Use natural peanut butter for the best sugar-free version.
• Stir constantly while melting to avoid burning the sweeteners.
• Let the fudge chill overnight for the best texture.
• A silicone loaf pan works great for easy removal.
• Slice with a warm knife for clean, smooth cuts.

☑️ Storage Instructions

• Fridge: Store your homemade fudge in an airtight container for up to a week.
• Freezer: You can also freeze it for up to 2 months. Thaw for a bit before serving.

🔄 Substitutions and Additions

• Chocolate swirl: Add a drizzle of melted sugar-free chocolate over the tops of the squares before chilling.

• Crunchy twist: Stir in chopped peanuts for extra texture.

• Salted caramel: Sprinkle a bit of flaky sea salt on top.

• Spice it up: Add a pinch of cinnamon or chili powder for a unique kick.

• Vanilla bean: Swap regular extract for vanilla bean paste for a richer flavor.

Why Isn’t My Fudge Setting?

If this happens, make sure the mixture is fully combined and chilled for at least 4 hours. It should set up perfectly.

Can I Use Almond Butter Instead?

You can but the texture and taste will change slightly.

How Do I Avoid Grainy Fudge?

If the mixture seems grainy, just make sure the sweeteners dissolve completely before adding peanut butter.

Is This Fudge Gluten-Free?

Yes! It’s completely gluten-free.

🍽️ More Tasty Peanut Butter Treats

• Peanut Butter and Jelly Chia Pudding
• Peanut Butter Mousse
• Peanut Butter Chocolate Fudge
• Peanut Butter Cookies
• Peanut Butter Cups