Keto Peanut Butter Chocolate Fat Bombs are small bites packed with rich peanut butter and smooth chocolate — all while keeping things low-carb and keto-friendly. These treats are creamy, sweet, and just the right size to satisfy your snack cravings without breaking your diet. They’re perfect if you love the combo of peanut butter and chocolate, but want to keep it simple and guilt-free.
I really enjoy making these fat bombs when I need a quick energy boost or a dessert that fits my keto lifestyle. What I love most is how easy they are to whip up and how versatile you can be with them — sometimes I add a little sea salt on top for a tasty contrast, or a sprinkle of chopped nuts for extra crunch. They always keep me going through busy days and make great little gifts for friends who are also watching their carbs.
My favorite way to enjoy these is chilled, right out of the fridge. They have a wonderful melt-in-your-mouth texture that feels like a little treat without any added sugar rush. These fat bombs are especially handy when you want something sweet but don’t want to mess up your keto goals. I think once you try them, you’ll want to keep a stash in your freezer too!
Key Ingredients & Substitutions
Natural Peanut Butter: Choose one without added sugar or oils. It keeps the carbs low and flavor pure. If you prefer, almond or cashew butter works too for a change in taste.
Unsalted Butter: Butter adds creaminess and fat that help with texture. You can swap this for coconut oil for a dairy-free version.
Powdered Erythritol: This sweetener won’t spike your blood sugar. You can use other keto-friendly sweeteners like monk fruit powder or stevia, but adjust the amount as these vary in sweetness.
Sugar-Free Dark Chocolate Chips: Look for at least 70% cocoa with no added sugar. If you can’t find chips, chop a sugar-free chocolate bar. Avoid regular chocolate to keep it keto.
Coconut Oil: This helps the chocolate melt smoothly and sets nicely. You could replace it with MCT oil for an extra keto boost, but it might affect texture a bit.
How Do You Get a Smooth Chocolate Shell Without Cracks?
Melting chocolate can be tricky. To avoid clumps or a chalky feel, it’s best to melt it slowly and gently.
- Microwave in short 30-second bursts, stirring well between each time.
- Don’t overheat; stop melting when most chips are soft, then stir until fully smooth.
- Add the coconut oil before melting—it thins the chocolate and helps it spread evenly.
- Pour the chocolate gently over chilled peanut butter centers to avoid cracking.
- Tap the mold lightly to release any air bubbles for a smooth top.
Following these steps will give you a shiny, firm chocolate coating that snaps just right when you bite in.
Equipment You’ll Need
- Mixing bowls – great for combining your peanut butter filling smoothly without mess.
- Mini muffin tin or silicone molds – these shape the fat bombs perfectly and make them easy to remove.
- Microwave-safe bowl – ideal for melting chocolate safely and evenly.
- Spoon or small spatula – helps you fill molds and spread chocolate layers neatly.
- Measuring cups and spoons – keep your ratios accurate for best texture and taste.
Flavor Variations & Add-Ins
- Use almond or cashew butter instead of peanut butter for a different nutty flavor.
- Add a pinch of cinnamon or cayenne pepper for a spicy twist that complements the chocolate.
- Stir in unsweetened shredded coconut or chopped nuts for extra texture and flavor.
- Mix in a few drops of peppermint extract for a refreshing minty version, especially festive around holidays.
Keto Peanut Butter Chocolate Fat Bombs: The Perfect Low-Carb Treat!
Ingredients You’ll Need:
For The Filling:
- 1 cup natural creamy peanut butter (no sugar added)
- 1/4 cup unsalted butter, softened
- 1/4 cup powdered erythritol (or your favorite keto sweetener)
- 1/2 teaspoon vanilla extract
For The Chocolate Coating:
- 1 1/2 cups sugar-free dark chocolate chips
- 1 tablespoon coconut oil
For Garnish:
- Flaked sea salt
- Optional: finely chopped peanuts
How Much Time Will You Need?
This recipe takes about 15 minutes to prepare, plus at least 2 hours to chill and set in the refrigerator. It’s mostly hands-off after assembly, perfect for a quick and easy keto snack.
Step-by-Step Instructions:
1. Make the Peanut Butter Filling:
In a medium bowl, mix together the natural peanut butter, softened butter, powdered erythritol, and vanilla extract until smooth and creamy. This will be the tasty center of your fat bombs.
2. Prepare the Molds:
Line a mini muffin tin with paper liners or lightly grease silicone molds to prevent sticking. Spoon a small amount of the peanut butter mixture into the bottom of each mold. Pop them into the freezer so they can firm up while you prepare the chocolate coating.
3. Melt the Chocolate:
In a microwave-safe bowl, combine the sugar-free dark chocolate chips and coconut oil. Heat in 30-second bursts, stirring between each, until fully melted and smooth.
4. Assemble the Fat Bombs:
Remove the peanut butter centers from the freezer. Pour or spoon melted chocolate over each peanut butter center until fully covered and the mold is filled. Tap the mold gently to smooth the tops and release any air bubbles.
5. Garnish and Chill:
Sprinkle flaked sea salt and, if you like, a few chopped peanuts on top for some crunch and extra flavor. Refrigerate the fat bombs for at least 2 hours, or until set and firm.
6. Serve and Store:
Carefully remove the fat bombs from the molds. Store them in an airtight container in the fridge or freezer to keep them fresh and ready for a quick, delicious low-carb treat anytime!
Can I Use Frozen Peanut Butter for This Recipe?
It’s best to use peanut butter at room temperature for easy mixing. If your peanut butter is frozen, just let it thaw in the fridge overnight and stir well before using.
How Long Do These Fat Bombs Keep?
Stored in an airtight container, they last up to 2 weeks in the fridge or 2 months in the freezer. Just thaw slightly before enjoying for the best texture.
Can I Substitute Almond Butter or Other Nut Butters?
Absolutely! Almond, cashew, or even sunflower seed butter can work well. Keep in mind different nut butters may change the flavor and firmness slightly.
Can I Make These Fat Bombs Ahead of Time?
Yes! They’re perfect for prepping in advance. Make a batch, freeze them, and grab one whenever you need a quick keto-friendly snack.
