Keto Peanut Butter Chocolate Fat Bombs

If you love the combination of peanut butter and chocolate, these keto peanut butter chocolate fat bombs are about to become one of your favorite low-carb treats.

They are rich, creamy, chocolatey, and packed with peanut butter flavor, but they are incredibly simple to make. There is no oven required, and you only need a handful of everyday ingredients.

I especially like keeping a batch in the freezer because they are perfect when I want something sweet after dinner without making an entire dessert. Just grab one, let it soften for a minute or two, and enjoy.

These little bites have a smooth peanut butter center with a rich chocolate coating that melts in your mouth. They are naturally low in carbohydrates and made without regular sugar, making them a great option when you’re following a keto diet.

Why You’ll Love This Recipe

No Baking Required – You can make these fat bombs without turning on your oven. Everything comes together on the stovetop or in the microwave.

Chocolate and Peanut Butter – The combination of creamy peanut butter and dark chocolate is hard to beat, especially when you want a satisfying keto-friendly dessert.

Only a Few Ingredients – You don’t need a long list of specialty ingredients. Most of what you need can be found in a well-stocked kitchen.

Perfect for Meal Prep – Make a batch ahead of time and keep them chilled or frozen for an easy grab-and-go treat.

Recipe Ingredients

For the Peanut Butter Filling

• 1/2 cup Natural Creamy Peanut Butter
• 3 tbsp Unsalted Butter, melted
• 2 tbsp Powdered Allulose
• 1/2 tsp Vanilla Extract
• 1/4 tsp Fine Sea Salt
• 2 tbsp Almond Flour

For the Chocolate Coating

• 4 oz Sugar-Free Dark Chocolate
• 1 tbsp Refined Coconut Oil

How To Make Keto Peanut Butter Chocolate Fat Bombs

Step 1

Line a mini muffin pan with 12 small paper liners. You can also use a silicone mini muffin mold if you have one.

Make sure the pan is completely dry before you begin. This makes it easier to handle the chocolate later.

Step 2

Add the peanut butter, melted butter, powdered allulose, vanilla extract, salt, and almond flour to a medium bowl.

Stir everything together until you have a smooth, thick mixture. The filling should be soft enough to scoop but firm enough to hold its shape.

If your peanut butter is particularly runny, let the mixture sit for a few minutes so the almond flour can absorb some of the moisture.

Step 3

Divide the peanut butter mixture evenly among the prepared liners.

I like using a small cookie scoop because it makes the portions more consistent, but a teaspoon works just as well.

Gently press and smooth the tops with the back of a spoon.

Step 4

Place the pan in the freezer for about 15 to 20 minutes, or until the peanut butter filling feels firm.

Don’t skip this step. A chilled filling is much easier to cover with the melted chocolate without the layers mixing together.

Step 5

While the filling chills, melt the sugar-free dark chocolate and coconut oil together.

You can do this in a microwave-safe bowl in 20-second intervals, stirring well between each interval. Continue until the chocolate is smooth.

You can also melt the chocolate gently in a heatproof bowl over a saucepan of barely simmering water.

Step 6

Remove the peanut butter bites from the freezer.

Spoon enough melted chocolate over each one to completely cover the top. Use the back of a small spoon to gently spread the chocolate toward the edges.

If you want a thicker chocolate coating, let the first layer sit for a few minutes and add another small spoonful of chocolate.

Step 7

Return the pan to the refrigerator or freezer.

Chill for about 30 minutes in the refrigerator or 15 to 20 minutes in the freezer, until the chocolate has completely hardened.

Step 8

Once firm, remove the fat bombs from the liners and let them sit at room temperature for a minute or two before serving.

The peanut butter center becomes softer and creamier as it warms slightly.

Tips for the Best Keto Fat Bombs

Use Natural Peanut Butter

Look for peanut butter that contains mostly peanuts and salt, without added sugar.

Some commercial peanut butters contain added sugar or syrups that can increase the carbohydrate content. Stir natural peanut butter thoroughly before measuring it so the oils and solids are evenly distributed.

If your peanut butter is very oily and runny, you may need to add a little extra almond flour to make the filling easier to shape.

Use Powdered Sweetener

Powdered allulose works particularly well here because it dissolves smoothly into the peanut butter mixture.

Granulated sweetener can sometimes leave a slightly gritty texture, especially when the fat bombs are served chilled.

If you use a different keto-friendly sweetener, sweetness and texture can vary, so adjust it according to the product you use.

Don’t Overheat the Chocolate

Chocolate can seize or become thick if it gets too hot.

Heat it gently and stir frequently. If you’re using the microwave, short intervals are much safer than heating it continuously.

The coconut oil helps create a smoother coating that firms up nicely once chilled.

Chill the Filling Before Adding the Chocolate

This small step makes a noticeable difference.

If the peanut butter mixture is still soft, the warm melted chocolate can sink into it and create a messy layer. Chilling the filling first gives you a much cleaner chocolate shell.

Add a Little Flaky Salt

For an extra sweet-and-salty flavor, sprinkle a tiny pinch of flaky sea salt over the chocolate before it sets.

The salt makes the chocolate and peanut butter flavors stand out without adding much at all.

Easy Variations

Add Chopped Peanuts

For some crunch, sprinkle finely chopped roasted peanuts over the chocolate before it hardens.

Make Them Extra Chocolatey

Add 1 tablespoon of unsweetened cocoa powder to the peanut butter filling. You may want to add a small amount of additional sweetener to balance the bitterness.

Use Almond Butter

If you don’t eat peanuts, you can experiment with natural almond butter instead. The consistency may be slightly different, so add the almond flour gradually until the filling is easy to scoop.

Add Unsweetened Coconut

A tablespoon or two of unsweetened shredded coconut can give the filling a pleasant chewy texture.

How to Store Them

Keep the finished fat bombs in an airtight container in the refrigerator for up to 1 week.

For longer storage, freeze them in a freezer-safe container for up to 2 months. Place parchment paper between layers if you are stacking them so the chocolate doesn’t stick together.

When you’re ready to eat one, let it sit at room temperature for a few minutes. You can also enjoy them straight from the refrigerator if you prefer a firmer texture.

More Keto Recipes

• Keto Chocolate Peanut Butter Bars
• Keto Peanut Butter Cookies
• Keto Chocolate Mousse
• Keto Chocolate Chip Fat Bombs
• Keto No Bake Cheesecake Bites

Frequently Asked Questions

Are peanut butter fat bombs keto?

They can be, depending on the ingredients. Peanut butter naturally contains some carbohydrates, so choosing unsweetened peanut butter and keeping the portions reasonable is important.

The overall carbohydrate content will also depend on the specific chocolate, sweetener, and peanut butter brands you use.

Can I make these without coconut oil?

Yes. The coconut oil helps make the chocolate coating smoother and slightly easier to bite through when chilled, but you can melt the sugar-free chocolate on its own.

The finished coating may be a little firmer.

Can I use regular peanut butter?

You can, but check the nutrition label first. Many regular peanut butters contain added sugar.

For the lowest-carb option, choose a peanut butter without added sugar or sweeteners.

Can I freeze keto peanut butter chocolate fat bombs?

Yes. These freeze very well.

Store them in an airtight freezer-safe container for up to 2 months. Let one sit at room temperature for a few minutes before eating so the peanut butter center softens slightly.

Why are my fat bombs too soft?

The consistency can vary depending on the peanut butter you use. Very runny peanut butter contains more oil and can make the filling softer.

Try chilling the mixture longer before adding the chocolate. If it is still too soft, stir in another tablespoon of almond flour and chill again.

Can I make larger fat bombs?

Yes. You can use a regular muffin pan instead of a mini muffin pan, but the portions will be larger and will need additional chilling time.

For a keto snack, I prefer the mini size because it makes portioning easier.