What makes this keto peanut butter fudge recipe the only one you need? The fact that you can make it in just 15-minutes certainly helps. And not needing a candy thermometer is a definite bonus. But the secret to this no-bake creamy fudge is in the cooking method itself. It's a whole lot of simple and a WHOLE LOTTA YUM!
Peanut Butter Fudge (Keto)
Ready or not, the holidays are coming. And while celebrating might look slightly different this year than in year's past, it doesn't mean we still can't enjoy all of the tastes of the season.
In our home, that means keto peanut butter fudge is definitely on the guest list - even if it is the only one! Rich and creamy from a combination of peanut butter and heavy cream, and perfectly sweetened without the carbs, this holiday treat is not one to hang around long in our home!
Sweetened with either monk fruit or erythritol, your keto peanut butter fudge is perfect for low-carb and keto fans. Actually, it's so good, even your carb-loving cousins won't miss the powdered sugar found in traditional recipes one bit! 😉
Low carb peanut butter fudge is a great addition to any holiday dessert tray you are creating. Pair it with other holiday goodies such as bark, candy, and cookies, or dress it up in a cookie tin and give the ultimate homemade gift.
Why You'll Love This Recipe
- Keto peanut butter fudge is the ultimate in quick desserts taking just 15-minutes to make!
- Sweetened with your choice of either monk fruit or erythritol, your low carb peanut butter fudge is still just as sweet as traditional fudge recipes but super low on carbs!
- Made with creamy peanut butter and heavy cream, our peanut butter fudge comes out soft and creamy, never grainy!
Complete your holiday baking with our other keto sweet treats. 3 ingredient keto peanut butter cookies, keto rum balls, and keto blondies are all crowd favorites!
On Keto? Grab our FREE keto foods list here OR Snag our Keto Binder HERE
Ingredient Notes
Your keto peanut butter fudge requires just a few ingredients and a few moments of your time.
- butter
- heavy whipping cream
- peanut butter - creamy and unsweetened
- golden monk fruit or erythritol
- vanilla
- powdered monk fruit
Variations
- Unsweetened almond butter should also work in this recipe and is lower in carbs than peanut butter. This variation, however, was not tested by us but should work, as would any type of keto-friendly nut butter.
Step by Step Instructions
The secret to your keto peanut butter fudge lies in your kitchen's oldest appliance - the microwave! We are going to use this kitchen powerhouse to transform your ingredients into a superb low-carb fudge that is simple and delicious.
Prep Ingredients
Line an 8x8 or 9x9 pan with parchment paper and coat it with cooking spray.
Using a medium sized bowl, melt the butter in the microwave.
Sift the powdered monk fruit (or powdered erythritol) to remove any clumps.
Assemble
In your bowl, combine the melted butter, heavy whipping cream, and golden monk fruit or erythritol. Stir to combine.
Cook
Microwave the mixture for about 5 minutes, stirring every 2 minutes, until the mix starts to thicken slightly and turns a golden caramel color.
***Caution: Be careful not to overcook the mixture otherwise it will burn.
Add in the peanut butter and vanilla and stir until the batter is smooth in texture.
Mix in the sifted powdered monk fruit. Stir to combine.
Spread the keto peanut butter fudge into an even layer in the prepared pan. Refrigerate the fudge until it's firm before cutting into squares.
Makes 16 large squares or the peanut butter keto fudge can be cut into even smaller pieces.
Your keto peanut butter fudge will keep for weeks in the fridge or a few months in the freezer.
Recipe Tips
- Make sure not to overcook the golden sweetener and butter mix so it does not burn. It should be a rich brown color and bubbling in the microwave, but not to where it starts smelling burnt. In our microwave, it took 5 minutes of cooking time to reach the perfect consistency. Plan on cooking it for 5 minutes, stirring the mix in 2-minute increments, but remove the mixture immediately if you smell a slight burnt odor.
- Sifting the powdered sweetener before mixing it in helps to prevent white clumps of sweetener in the finished dish.
- Either monk fruit like Lakanto brand or erythritol like Swerve brand will work for the powdered sweetener and the golden brown sugar substitute. We prefer Lakanto in our test kitchen since it leaves less of a "cold" aftertaste, however, Swerve is easier to find and usually costs a little bit less.
Common Questions
How long does fudge keep?
Fudge can last for weeks in the fridge as long as it's stored properly and covered tightly with plastic wrap or kept in a storage container.
Can it be frozen?
Yes, up to 3 months in the freezer to maintain taste.
More Keto Sweet Treats
Looking for more keto dessert recipes?
- Peanut butter fat bombs
- Keto chocolate covered almonds
- Keto Rum Balls
- Gluten-free blondies (keto too)
- Best sugar free desserts
Please leave a review if you make our recipe! We love feedback from readers, plus it helps others too.
Come connect with us on Instagram! Be sure to tag us (wholelotta.yum) when you make a recipe. You can also find us on Facebook, and Pinterest.
Microwave Keto Peanut Butter Fudge
Yield: 16 large squares
Prep Time: 10 minutes
Cook Time: 5 minutes
Additional Time: 2 hours
Total Time: 2 hours 15 minutes
A quick and easy keto peanut butter fudge made in the microwave that takes just 15 minutes to assemble and cook! You'll seriously be blown away at how easy and delicious this peanut butter fudge keto recipe tastes.
Ingredients
- 2 oz butter, melted
- ¼ cup heavy whipping cream
- 1 cup peanut butter, creamy and unsweetened
- ½ cup golden monk fruit or erythritol
- 1 teaspoon vanilla
- ½ cup powdered monk fruit
Instructions
Line an 8x8 or 9x9 pan with parchment paper and coat it with cooking spray. Prep the ingredients by melting the butter and sifting the powdered monk fruit (or powdered erythritol).
In a medium-size bowl combine the melted butter, heavy whipping cream, and golden monk fruit.
Microwave for about 5 minutes until the mix starts to thicken slightly, stopping the microwave and stirring the mixture every 2 minutes. You'll continue cooking the mix in 2-minute increments and stirring after each time until it turns a golden caramel color. Be careful not to overcook because it'll burn.
Stir in the peanut butter and vanilla until the batter is smooth in texture. Mix in sifted, powdered monk fruit.
Spread the keto peanut butter fudge into an even layer in the pan.
Refrigerate the fudge until it's firm before cutting into squares. Makes 16 large squares or the peanut butter keto fudge can be cut into even smaller pieces.
It'll keep for weeks in the fridge or a few months in the freezer.
Notes
Make sure not to overcook the golden sweetener and butter mix, you don't want it to burn. It should be a rich brown color and bubbling in the microwave, but not to where it starts smelling burnt. In our microwave, it took 5 minutes of cooking time to reach the perfect consistency. Plan on cooking it for 5 minutes, stirring the mix in 2-minute increments, but remove the mixture immediately if you smell a slight burnt odor.
Sifting the powdered sweetener before mixing it in helps to prevent white clumps of sweetener in the finished dish.
Either monk fruit like Lakanto brand or erythritol like Swerve brand will work for the powdered sweetener and the golden brown sugar substitute. We prefer Lakanto in our test kitchen since it leaves less of a "cold" aftertaste, however, Swerve is easier to find and usually costs a little bit less.
Unsweetened almond butter should also work in this recipe and is lower in carbs than peanut butter. This variation, however, was not tested by us but should work, as would any type of keto friendly nut butter.
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Nutrition Information
Yield 16Serving Size 1
Amount Per ServingCalories 140Total Fat 12gSaturated Fat 4gTrans Fat 0gUnsaturated Fat 6gCholesterol 12mgSodium 101mgCarbohydrates 6gNet Carbohydrates 3gFiber 1gSugar 0gSugar Alcohols 2gProtein 4g
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