If you’re looking for a quick and delightful treat that fits perfectly into your low-carb lifestyle, you’re in the right place! This Keto Peanut Butter Fudge is not only easy to whip up but also packs a protein punch to keep you energized. It’s become my go-to recipe for busy weeknights or when I want to impress friends at family gatherings. Trust me, once you take a bite, you’ll understand why this fudge has stolen my heart!
This fudge is rich, creamy, and oh-so-satisfying without any guilt. Plus, it’s a wonderful way to enjoy something sweet while sticking to your dietary goals!
Why You’ll Love This Recipe
- Quick and Easy: With just a few minutes of prep time, you can have this delicious treat ready in no time!
- Protein-Packed: Adding protein powder gives it an extra boost, making this fudge not just tasty but also nutritious.
- Family-Friendly: Everyone will love this sweet treat—even those who aren’t following a keto diet!
- Make-Ahead Delight: You can prepare it in advance and store it in the freezer for whenever those cravings hit.
- Customizable Flavor: Feel free to get creative with mix-ins and toppings to suit your taste!

Ingredients You’ll Need
Let’s talk about the ingredients! They’re simple, wholesome, and come together beautifully to create the perfect fudge. Here’s what you’ll need for this Keto Peanut Butter Fudge:
- 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 parts about this recipe is how flexible it is! Feel free to mix things up based on what you have on hand or your personal preferences:
- Swap the protein: If you’re not keen on protein powder, leave it out or substitute with your favorite nut flour.
- Add some spice: Toss in a pinch of cinnamon or sea salt for an extra layer of flavor.
- Nutty goodness: Try using almond butter instead of peanut butter for a different twist!
- Go fruity: Add chopped dried fruits like cranberries or cherries for a chewy surprise.
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 in 30-second intervals while stirring until the mixture is smooth and combined. This step is crucial as it creates that creamy base we all love!
Step 2: Sweeten It Up
Next, add the protein powder (if using) and Swerve brown sugar substitute into the melted mixture. Whisk everything together until well combined. Return it to the microwave for another 30 seconds if needed to ensure all ingredients are melted and melded together perfectly.
Step 3: Add Flavor
Now, stir in the vanilla extract. This little addition helps enhance all those yummy flavors and makes your kitchen smell heavenly!
Step 4: Prepare Your Dish
Layer the fudge batter into a well-greased or parchment-lined 9×9 baking dish. Spreading it evenly will give you beautiful squares when it’s set!
Step 5: Top It Off
Sprinkle chopped peanuts over the top before placing your dish in the freezer for one hour. This not only adds crunch but also looks inviting when served.
Step 6: Melt Chocolate Drizzle
In another microwave-safe bowl, combine Lily’s baking chips and coconut oil. Heat them in 30-second intervals until melted and smooth. This chocolate drizzle will elevate your fudge from good to absolutely irresistible!
Step 7: Drizzle Away
Using a fork, drizzle that delicious chocolate over your fudge creation. The more artistic you are with this step, the prettier your dessert will look!
Step 8: Final Chill
Return the fudge back to the freezer for just another 15 minutes before slicing it into squares. Now you’re ready to serve up these delightful treats!
And there you have it—your very own Keto Peanut Butter Fudge! Enjoy each bite knowing it’s made with love (and just a hint of indulgence).
Pro Tips for Making Keto Peanut Butter Fudge
Creating the perfect keto peanut butter fudge is easier than you think with a few handy tips!
- Use natural peanut butter: Opt for a brand that contains only peanuts and salt to ensure it’s lower in carbs and free from unhealthy additives.
- Microwave in short intervals: Heating your ingredients in 30-second bursts allows for better control, preventing overheating and ensuring everything blends smoothly.
- Chill properly: Make sure to let your fudge set in the freezer. This will give it the perfect texture—firm enough to slice but still creamy and delightful.
- Play with flavors: Feel free to experiment by adding other extracts like almond or hazelnut for a unique twist on your classic fudge.
- Store correctly: Keep your fudge in an airtight container in the fridge to maintain freshness and prevent it from getting too soft.
How to Serve Keto Peanut Butter Fudge
Serving your keto peanut butter fudge can be just as fun as making it! Here are some ideas to make it look as good as it tastes.
Garnishes
- Sea salt: A sprinkle of coarse sea salt on top enhances the sweetness of the fudge and adds a delightful contrast.
- Chopped nuts: Besides peanuts, consider using almonds or walnuts for added crunch and flavor.
Side Dishes
- Fresh berries: A side of raspberries or strawberries not only adds color but also provides a refreshing balance to the richness of the fudge.
- Greek yogurt: A dollop of unsweetened Greek yogurt makes for a creamy companion that complements the fudge perfectly while adding an extra protein boost.
- Keto-friendly ice cream: Pairing your fudge with a scoop of low-carb ice cream can take dessert to another level of indulgence, making it feel extra special!

Make Ahead and Storage
This Keto Peanut Butter Fudge is perfect for meal prep! You can whip up a batch ahead of time, store it, and enjoy a delicious treat anytime you need a quick energy boost.
Storing Leftovers
- Keep the fudge in an airtight container at room temperature for up to 3 days.
- For longer freshness, refrigerate it for up to 2 weeks.
- Ensure the container is well-sealed to prevent moisture from affecting the texture.
Freezing
- Cut the fudge into squares before freezing for easy portion control.
- Wrap each piece in plastic wrap or aluminum foil individually.
- Place wrapped fudge in a freezer-safe bag or container, and freeze for up to 3 months.
Reheating
- If you prefer your fudge warm, place a piece in the microwave for about 10-15 seconds.
- Be careful not to overheat; you want it just warm enough to soften slightly without melting completely.
FAQs
Here are some common questions about this delightful Keto Peanut Butter Fudge:
Can I use other nut butters instead of peanut butter?
Absolutely! Almond butter or cashew butter can be great alternatives if you’re looking for a different flavor profile while still keeping it keto-friendly.
How can I make my Keto Peanut Butter Fudge more chocolatey?
You can add extra Lily’s baking chips mixed into the fudge batter before setting it or incorporate cocoa powder into the mixture to deepen the chocolate flavor.
Is Keto Peanut Butter Fudge suitable for meal prep?
Yes! This recipe is great for meal prep as it stores well in both the fridge and freezer, allowing you to have a delicious keto treat on hand whenever you want!
How many servings does this Keto Peanut Butter Fudge yield?
This recipe yields 16 servings, making it perfect for sharing or enjoying throughout the week!
Final Thoughts
I hope you enjoy making this Keto Peanut Butter Fudge as much as I do! It’s not only easy and quick but also packed with protein and flavor. Whether you’re treating yourself after a workout or need a sweet snack during your day, this fudge fits the bill perfectly. Happy cooking, and don’t forget to share your creations with friends and family!
Keto Peanut Butter Fudge
Indulge in the rich and creamy goodness of Keto Peanut Butter Fudge, a delightful treat that caters to your low-carb lifestyle without sacrificing flavor. This easy-to-make dessert is packed with protein and perfect for satisfying those sweet cravings. Whether you need a quick energy boost or a sweet touch for family gatherings, this fudge is sure to impress. With its customizable flavors and make-ahead convenience, you can whip up this delectable treat anytime you want.
- Prep Time: 10 minutes
- Cook Time: 5 minutes
- Total Time: 15 minutes
- Yield: Approximately 16 servings 1x
- Category: Dessert
- Method: No-bake
- Cuisine: American
Ingredients
- 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
Instructions
- In a microwave-safe bowl, combine peanut butter and unsalted butter. Heat in 30-second intervals, stirring until smooth.
- Add protein powder and Swerve brown sugar substitute; whisk until combined. Microwave again if needed.
- Stir in vanilla extract for added flavor.
- Pour mixture into a greased or parchment-lined 9×9 baking dish, spreading evenly.
- Top with chopped peanuts and freeze for one hour.
- For the drizzle, melt Lily's baking chips with coconut oil in another bowl, then drizzle over the fudge.
- Return to the freezer for an additional 15 minutes before slicing into squares.
Nutrition
- Serving Size: 1 serving
- Calories: 120
- Sugar: 2g
- Sodium: 80mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 5g
- Fiber: 2g
- Protein: 5g
- Cholesterol: 15mg




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