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November 20, 2025 0 min read
Rated 5 stars by 1 users
dessert
KetoGenics
Have you missed classic peanut butter fudge on your keto or low-carb lifestyle? Well, this recipe is going to be your new favorite. This creamy keto peanut butter fudge is made with KetoGenics Iso-Plant Vegan Protein Powder, so every square is packed with plant-based protein and free of added sugar. With just a few simple ingredients, no baking, and only minutes to make, you can whip up a batch for weeknight treats, holiday platters, or a quick snack that won’t wreck your carbs. It’s gluten-free, low-carb, and can easily be made dairy-free, making it perfect for keto beginners and long-time macro trackers alike.

1 cup (250–260 g) natural peanut butter:Smooth, unsweetened, no added sugar
1/2 cup (110–115 g) coconut oil or unsalted butter, melted (Coconut oil = dairy-free, butter = extra rich)
1/3–1/2 cup powdered keto sweetener, to taste: Allulose, erythritol, or a blend (powdered works best for smooth fudge)
1 scoop (about 25–30 g) KetoGenics Iso-Plant Vegan Protein Powder (Peanut Butter Cookie Flavor)
1–3 Tbsp unsweetened almond milk or water, as needed (Just enough to make it thick, glossy, and spreadable)
In a medium bowl, add the peanut butter and melted coconut oil or butter, stir until completely smooth and glossy.
Sprinkle in the Iso-Plant and stir well. The mixture will thicken up, that’s normal.
Add 1 Tbsp almond milk or water at a time, mixing after each addition, until the fudge is thick, smooth and spreadable (not runny or crumbly)
Scrape the mixture into your lined pan and press it down evenly with a spatula or the back of a spoon.
Refrigerate for at least 2 hours, or until firm enough to slice cleanly. For ultra-firm fudge, you can briefly pop it in the freezer (just don’t forget it for hours or it’ll be rock hard).
Lift the fudge out using the parchment overhang. Cut into 24 small squares (or any size you like).
Store in an airtight container: Fridge: up to 1–2 weeks and Freezer: up to 2–3 months (just let it soften a few minutes before eating)
Chocolate peanut butter swirl:
Melt a few Tbsp of sugar-free chocolate chips and drizzle or swirl into the top before chilling.
Extra protein boost:
Add another 1/2 scoop Iso-Plant and a splash more almond milk if you want it higher protein but still fudge-like.
Crunchy version:
Use half crunchy peanut butter and half smooth.
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