You only need 5 ingredients to make these Keto peanut butter cups! I call them keto Reeses cups, because they are a sugar free and low carb copycat version of the popular chocolate treat: a creamy peanut butter filling encased in crisp dark chocolate.
Table of contents
- Keto Reeses cups
- Is peanut butter keto?
- Keto pb cups ingredients
- How to make keto peanut butter cups
- Peanut butter texture
- Nut free option
- Keto milk or white chocolate cups
- How to store keto chocolate peanut butter cups
- More sugar free keto fat bomb recipes
You all know about my love of the chocolate peanut butter combo. It's an absolute dream team, and I have numerous recipes the combine the two. There's my Keto Peanut Butter Chocolate Bars, these Sugar Free Peanut Butter Chocolate Ice Pops and this extra creamy Keto Chocolate Peanut Butter Fudge.
Seriously, I've been thinking I should start a sugar free chocolate peanut butter blog. I have enough recipe ideas to last me years!
Keto Reeses cups
Have you tried Reese's peanut butter cups? I came across them first in the 80's when I was an exchange student in Walterboro, South Carolina, for a year. The memories!
Alas, they are packed with sugar. So, instead of waiting for Reese's to come up with a proper sugar free version (theirs uses maltitol, which raises blood sugar levels), I decided to make my own.
I've been meaning to post this keto peanut butter cups recipe for ages. I eat it regularly, because it is such an easy and delicious sugar free treat.
My version is so simple. It uses only 5 ingredients that you probably have in your cupboard right now!
They are a great bite sized afternoon sugar free treat. But I also like them as a smaller dessert that does not leave you stuffed after a meal.
Before we get to the recipe, let's clarify something first...
Is peanut butter keto?
There's always someone who shouts that peanut butter is "not keto". I disagree. True, peanut is a legume, which we normally avoid on keto. But peanuts are higher in fat than other beans, and low in carbs. Nutritionally speaking, they are very similar to almonds. Peanuts are also gluten free.
Watch out though - not all peanut butter brands are keto friendly because some add sugar to their product. Always read the label! Alternatively, you can also make your own peanut butter.
Keto pb cups ingredients
Here are our main ingredients: chocolate, peanut butter, coconut oil and salt. The sweetener is optional!
You can also use my recipe for homemade low carb chocolate!
The coconut oil is necessary to make the chocolate a little softer. You can swap it out with butter if you prefer.
My go to natural peanut butter brand for keto recipes like this one is Whole Earth . It is a little firmer than other brands, which works well here.
The salt is a wonderful flavour enhancer. Of course, if your peanut butter is already salty, you don't need to add more.
As a sweetener, I used a powdered erythritol / monk fruit blend. Any sweetener will work, from erythritol to xylitol to allulose. Just make sure it's powdered so you don't get crunchy bits.
You can powder granulated sweetener at home by blitzing it in a food processor. Just wait a couple of minutes for the dust to settle before you open the lid!
How to make keto peanut butter cups
1. Melt the chocolate
Water bath method: Place the chocolate and coconut oil in a heat proof bowl and melt over a pan filled with a little water. Stir a couple of times. Remove the bowl from the pan and allow to cool a little.
Microwave method: Heat the chocolate and coconut oil on high for 1 minute. Check and stir. Then heat another 30 seconds. Stir until the chocolate is fully melted.
Note - It is important that you stop microwaving BEFORE all chocolate is melted. When chocolate gets too hot it can seize and separate.
Before you start assembling the low carb peanut butter cups, wait until the chocolate has cooled a little. You want it thicken a bit. This makes it easier to work with.
2. Line cups with chocolate base
Time to build the keto pb cups! Get yourself mini cupcake silicone molds or paper moulds. Add about 1 tsp of chocolate to each cup and use the back of a teaspoon to coat the sides.
If you use moulds that are taller than the ones I used, simply swirl the melted chocolate up the sides, depending on how tall you want your chocolate peanut butter cups to be (about 1 inch).
Place in the freezer to set for 10 minutes.
3. Add sugar free pb filling
Mix the peanut butter with the sweetener and the salt, if using.
Add 1 tsp of peanut butter mixture on top of the frozen chocolate base, or just enough to sit in the centre of the cup. Flatten with the top of the spoon.
4. Cover with chocolate
Top the keto fat bombs with the rest of the melted chocolate and place back in the freezer to set.
Note - If the melted chocolate has set too much during waiting, simply re-heat it a little to make it spoonable or pourable.
Top with sea salt flakes if you wish!
Peanut butter texture
I picked a peanut butter brand that is naturally firm. If your peanut butter is more on the runny side, you have two choices.
Choice 1: Dig into the bottom of the pot where the peanut butter is normally firmer.
Choice 2: Add ½ tbsp melted coconut oil (or butter) to the peanut butter mix. This will help firm it up. However, you'll have to add an extra step and freeze the peanut butter layer for 10 minutes because initially it will be liquid.
Once it's cooled, add the top chocolate layer and freeze again.
Nut free option
You can use another nut butter such as almond butter or sunflower seed butter for a nut free alternative.
Keto milk or white chocolate cups
How to store keto chocolate peanut butter cups
Store your keto reeses cups in a closed container in the fridge for up to 3 weeks or in the freezer for 3 months.
More sugar free keto fat bomb recipes
Keto Salted Caramel Cheesecake Fat Bomb Recipe - These cheesecake fat bombs require only 3 ingredients!
Chocolate Walnut Keto Fat Bombs - My very first fat bomb recipe is sweetened with stevia.
Cacao Nut Butter Fat Bombs - so creamy! A delicious mix of chocolate and almond butter.
Tried this recipe? Give it a star rating below!
Keto Reeses peanut butter cups
Note: The servings slider only changes the first amount in each line and not any subsequent amounts. Please make your own calculations where necessary. ***As an Amazon Associate I earn from qualifying purchases.
- mini cupcake silicone moulds (1.8 inch diameter at the bottom) or mini paper cupcake liners
- Line a muffin tin with paper liners or use silicone cupcake moulds.
- Place the chocolate and coconut oil in a heat proof bowl and melt over a pan filled with a little water. Stir a couple of times. Remove the bowl from the pan and allow to cool a little. (Alternatively, heat in the microwave.**)
- Mix the peanut butter with the sweetener (if using) and salt. Use firmer peanut butter from the bottom of the pot.
- Add about 1 tsp of chocolate to each cup and use the back of a teaspoon to coat the sides. Place in the freezer to set for 10 minutes.
- Add 1 tsp of peanut butter, or just enough to sit in the centre of the cup. Flatten with the top of the spoon.
- Cover with the rest of the chocolate. Place back in the freezer for about 10 minutes, or until fully set. Store in the fridge.
This post contains affiliate links. If you click on one of these links and purchase a product, I may earn a small commission, at no extra cost to you. Thank you for supporting Sugar Free Londoner.