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Keto / Dessert / Keto Peanut Butter Fudge

Keto Peanut Butter Fudge

January 3, 2026 by Tiffany

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If you’re looking for a delightful treat that satisfies your sweet tooth while keeping your carb count low, then you’re in for a real treat with this Keto Peanut Butter Fudge! This recipe has quickly become a favorite of mine because it’s rich, creamy, and oh-so-easy to whip up. Perfect for busy weeknights or family gatherings, this fudge offers a delicious way to indulge without the guilt.

The best part? With just a few simple ingredients, you can create a sweet snack that’s packed with protein and flavor. Whether you’re enjoying it after dinner or need an afternoon pick-me-up, this keto peanut butter fudge is sure to please everyone!

Why You’ll Love This Recipe

  • Quick and Easy: This fudge comes together in just 20 minutes, making it perfect for those last-minute cravings.
  • Family-Friendly: Kids and adults alike will love the rich peanut butter flavor—it’s a hit at any gathering!
  • Make-Ahead Convenience: Prep this treat in advance and keep it in the freezer for whenever you need a sweet snack.
  • Customizable Ingredients: You can easily adjust the recipe to fit your preferences or dietary needs.
  • Decadent Flavor: The combination of peanut butter and chocolate makes every bite irresistible!
Keto

Ingredients You’ll Need

This recipe uses simple, wholesome ingredients that are easy to find. Let’s gather what we need to create this delightful keto peanut butter fudge!

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  • 1 1/2 cups natural peanut butter (lower-carb)
  • 1 scoop protein powder (optional)
  • 1/2 cup Swerve brown sugar substitute
  • 6 tbsp unsalted butter
  • 1 tsp vanilla extract
  • 1/4 cup chopped peanuts
  • 1/4 cup Lily’s baking chips
  • 1 tbsp coconut oil

Variations

One of the best things about this recipe is how flexible it is! You can easily tweak the ingredients or add extra flavors to suit your taste. Here are some fun variations to consider:

  • Add Some Spice: Mix in a pinch of cinnamon or nutmeg for a warm flavor boost.
  • Change Up the Nuts: Try using chopped almonds or walnuts instead of peanuts for a different texture.
  • Go Dark Chocolate: Use dark chocolate chips instead of Lily’s baking chips for an intense chocolate experience.
  • Mix in Some Seeds: Add chia seeds or flaxseeds for an extra nutritional punch.

How to Make Keto Peanut Butter Fudge

Step 1: Melt the Base

Start by placing the peanut butter and unsalted butter into a microwave-safe bowl. Heat them at 30-second intervals, stirring after each interval until the mixture is melted and smooth. This step is key because it ensures that all ingredients blend well together.

Step 2: Combine Sweeteners

Next, add the optional protein powder and Swerve brown sugar substitute to your melted mixture. Whisk everything together until it’s fully combined. Return the bowl to the microwave if needed to ensure the sugar substitute melts completely—this will give your fudge its lovely consistency.

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Step 3: Add Flavor

Stir in the vanilla extract, which adds depth and aroma to your fudge. This little addition really enhances the overall flavor profile, making each bite deliciously satisfying.

Step 4: Prepare for Freezing

Layer your fudge batter into a well-greased or parchment-lined 9×9 baking dish. Spread it evenly so it sets nicely later on.

Step 5: Sprinkle on Nuts

Sprinkle chopped peanuts on top of your fudge layer before placing it into the freezer. This gives it a delightful crunch that contrasts beautifully with its creamy texture.

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Step 6: Melt the Topping

In another microwave-safe bowl, combine Lily’s baking chips and coconut oil. Heat at 30-second intervals until melted, stirring well between each interval until smooth. This drizzle adds an extra layer of indulgence!

Step 7: Drizzle with Chocolate

Using a fork, drizzle the melted chocolate over your fudge base. Take your time here; it’s all about creating that gorgeous finish!

Step 8: Final Chill & Serve

Return your fudge back to the freezer for just 15 more minutes to firm up before slicing into squares. Now you can serve up these delicious bites of keto peanut butter fudge—enjoy every moment!

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Pro Tips for Making Keto Peanut Butter Fudge

Making this delicious keto peanut butter fudge is a breeze, especially with these handy tips!

  • Use natural peanut butter – Opting for natural peanut butter without added sugars keeps the recipe low-carb and gives it a rich flavor.
  • Choose the right protein powder – If you’re adding protein powder, select a flavor that complements peanut butter, like vanilla or unflavored, to enhance the taste without overpowering it.
  • Ensure proper melting – Microwave in short intervals and stir frequently to avoid scorching. This ensures a smooth, creamy texture that makes your fudge irresistible.
  • Customize your mix-ins – Feel free to add your favorite nuts or seeds to the mixture for an extra crunch and nutritional boost. Just make sure they are keto-friendly!
  • Store properly – Keep your fudge in an airtight container in the freezer for optimal freshness. It will last longer and maintain its delightful texture.

How to Serve Keto Peanut Butter Fudge

Serving your keto peanut butter fudge can be as creative as you want! Whether it’s for a special occasion or just a sweet treat at home, presentation matters.

Garnishes

  • Chopped chocolate or cocoa nibs – Sprinkling some over the top adds an extra layer of flavor and makes it visually appealing.
  • Sea salt flakes – A touch of sea salt balances the sweetness and enhances the overall flavor profile of the fudge.

Side Dishes

  • Fresh berries – Strawberries or raspberries provide a refreshing contrast to the richness of the fudge, adding color and a burst of tartness.
  • Keto ice cream – Pair with a scoop of keto-friendly vanilla ice cream for a delightful dessert that feels indulgent while staying within your diet.
  • Whipped coconut cream – A dollop of whipped coconut cream makes for a luscious topping that complements the fudgy texture beautifully.
  • Nut butter dip – Serve alongside additional nut butters for those who love to double down on their favorite flavors—perfect for dipping!

Enjoy your delightful creation, and remember: sharing (if you can resist!) is one of the best parts about making this scrumptious keto peanut butter fudge!

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Keto

Make Ahead and Storage

This Keto Peanut Butter Fudge is not only a delightful treat but also a fantastic option for meal prep! You can whip up a batch in no time, making it easy to satisfy your sweet cravings throughout the week.

Storing Leftovers

  • Store the fudge in an airtight container to maintain freshness.
  • Keep it in the refrigerator for up to one week.
  • If you’re concerned about it sticking together, layer parchment paper between pieces.

Freezing

  • Cut the fudge into individual pieces before freezing for easy access.
  • Place pieces in a single layer on a baking sheet and freeze until solid.
  • Transfer the frozen fudge to a freezer-safe container or bag, where it will last for up to three months.

Reheating

  • If you prefer your fudge slightly softened, allow it to sit at room temperature for about 10-15 minutes before serving.
  • For quick warming, use the microwave in short bursts (5-10 seconds) until the desired softness is achieved.

FAQs

Here are some frequently asked questions about this delicious recipe!

Can I make Keto Peanut Butter Fudge without protein powder?

Absolutely! While the protein powder adds an extra boost, you can omit it entirely if you prefer or don’t have it on hand. The fudge will still be delicious!

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How can I customize my Keto Peanut Butter Fudge?

Feel free to mix in your favorite nuts or seeds, or even add a swirl of unsweetened cocoa powder for a chocolatey twist. The possibilities are endless!

How long does Keto Peanut Butter Fudge last?

When stored properly in an airtight container in the refrigerator, this fudge can last up to one week. If frozen, it can last for three months!

Final Thoughts

I hope you find joy in making this Keto Peanut Butter Fudge as much as I do! It’s a simple yet satisfying treat that fits perfectly into your keto lifestyle while delivering that sweet indulgence we all crave. Enjoy every bite and don’t hesitate to share this recipe with friends and family—you never know who might need a tasty pick-me-up!

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Keto Peanut Butter Fudge

Keto Peanut Butter Fudge
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Indulge in the creamy goodness of Keto Peanut Butter Fudge, a delectable dessert that satisfies your sweet cravings without the guilt. This easy-to-make treat combines rich peanut butter and decadent chocolate, creating a mouthwatering experience perfect for any occasion. With just a handful of wholesome ingredients, you’ll whip up this low-carb delight in no time—ideal for busy weeknights or as a make-ahead snack. Whether enjoyed after dinner or as a midday pick-me-up, this fudge is sure to be a hit with family and friends alike.

  • Author: Tiffany
  • Prep Time: 10 minutes
  • Cook Time: 10 minutes
  • Total Time: 20 minutes
  • Yield: Approximately 16 servings 1x
  • Category: Dessert
  • Method: Freezing
  • Cuisine: Keto

Ingredients

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  • 1 1/2 cups natural peanut butter
  • 1/2 cup Swerve brown sugar substitute
  • 6 tbsp unsalted butter
  • 1 tsp vanilla extract
  • 1/4 cup chopped peanuts
  • 1/4 cup Lily's baking chips
  • 1 tbsp coconut oil

Instructions

  1. In a microwave-safe bowl, combine peanut butter and unsalted butter. Heat in 30-second intervals, stirring until melted and smooth.
  2. Mix in Swerve brown sugar substitute (and protein powder if using) until fully combined. Microwave again if needed to melt the sugar.
  3. Stir in vanilla extract for added flavor.
  4. Spread the mixture evenly into a greased or parchment-lined 9×9 baking dish.
  5. Sprinkle chopped peanuts on top before freezing.
  6. For the topping, melt Lily's baking chips with coconut oil in another bowl, then drizzle over the fudge mixture.
  7. Freeze for about 15 minutes before slicing into squares.

Nutrition

  • Serving Size: 1 serving
  • Calories: 120
  • Sugar: 2g
  • Sodium: 80mg
  • Fat: 10g
  • Saturated Fat: 3g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 5g
  • Fiber: 2g
  • Protein: 4g
  • Cholesterol: 10mg

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