Keto Peanut Butter Fudge

Indulge guilt-free with this creamy and rich keto peanut butter fudge recipe, elevated with the goodness of collagen peptides. Satisfy your sweet cravings without the sugar overload and enjoy a healthier treat packed with flavor and protein. With just a handful of ingredients, this fudge is a breeze to make and boasts only 3g of carbs per serving.

The Perfect Blend of Flavor and Health

Enhance the traditional fudge recipe with a collagen protein twist for added health benefits. Collagen peptides not only contribute to the fudge’s creamy texture but also offer a plethora of advantages for hair, skin, and joint health. Opt for unflavored collagen powder to let the natural peanut butter flavor shine through.

Tips for Flawless Fudge Every Time

Achieve fudge perfection with these expert tips:

  • Line Your Loaf Pan: Ensure easy removal of the fudge by lining the loaf pan with waxed or parchment paper, allowing for seamless slicing.
  • Creamy Peanut Butter: Opt for a smooth and creamy peanut butter for the ultimate fudge texture. Avoid varieties with excessive oil, as they can affect consistency.
  • Salted vs. Unsalted Butter: Tailor the fudge to your taste preferences by choosing between salted or unsalted butter. Salted butter enhances flavor, but unsalted options offer a milder taste.
  • Choose the Right Sweetener: Use powdered sweetener to avoid a gritty texture. Swerve is recommended for optimal results, as other sweeteners may alter the fudge’s consistency.
  • Collagen Powder Magic: Incorporate collagen powder to reduce sweetener quantity while maintaining fudge consistency. Adjust sweetness to taste preferences by adding additional sweetener if desired.

Storing Your Keto Peanut Butter Fudge

Enjoy your fudge at its best by storing it appropriately:

  • Room Temperature: For optimal texture and flavor, store fudge at room temperature in a covered container for up to 4 days.
  • Refrigeration: Extend fudge freshness by refrigerating it for several weeks in a sealed container. Prevent flavor transfer by storing it away from other refrigerated items.

Keto Peanut Butter Fudge

Recipe by Admin
0.0 from 0 votes
Course: DessertCuisine: American


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Easy Keto Peanut Butter Fudge


  • 1 cup unsweetened creamy peanut butter (add a pinch of salt if it’s unsalted)

  • ½ cup butter

  • ½ teaspoon vanilla extract

  • ¾ cup powdered Swerve Sweetener

  • ⅓ cup collagen peptides


  • Line a loaf pan (8×4 inch or 5×9 inch) with waxed paper.
  • In a medium saucepan over low heat, combine the peanut butter and butter. Stir until melted, then stir in the vanilla extract.
  • Whisk in the sweetener and collagen until well combined and smooth. Pour the mixture into the prepared pan and refrigerate until set, about 1 hour.
  • Lift the waxed paper out by the edges and cut the fudge into 15 pieces.


  • If you would prefer not to use collagen, you can add another ¼ cup to ⅓ cup Swerve Confectioners.

Nutrition Facts

  • Calories: 178kcal
  • Carbohydrates: 3.9g
  • Protein: 8.3g
  • Fat: 14g
  • Fiber: 0.9g

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