Keto Peanut Butter Swirl Brownies

Are you a fan of chocolate and peanut butter doing keto? Well, these delicious keto peanut butter brownies will satisfy that craving easily.

It’s a recipe for low-carb peanut butter brownies because who doesn’t love the combination of peanut butter and chocolate?

Honestly, these two were meant to be besties and live side by side, as far as I am concerned.

Am I wrong? Don’t you agree that certain foods were just destined to go together? It’s as if they bring out the best in one another by enhancing their flavor profiles.

I’ve always been a fan of the combination of chocolate and peanut butter, and I don’t see this love of mine changing any time soon.

These keto peanut butter fudge brownies are made extra fudgy with cream cheese in the peanut butter swirl.

Cream cheese moistens these peanut butter brownies and further enhances their flavor. 

If you’re a fan of keto baking with cream cheese, you might also check out these recipes. 

Check out our keto peanut butter recipes for more delicious keto-friendly peanut butter recipes!

Oh, and of course, be sure to check out our entire collection of keto brownie recipes.

Keto Peanut Butter Brownies

Curb your sweet tooth with a sugar-free, chocolatey, peanut buttery-rich keto brownie. 

With just a few basic ingredients, you’ll have a delicious treat that is so easy to make that you’ll find yourself making it often.

Do you know that before I made low-carb keto a lifestyle, Reese’s Peanut Butter Cups were a regular part of my life? Fast forward, and a real Reese cup hasn’t crossed my lips.

BUT….by no means did I suddenly stop loving the combination of peanut butter and chocolate.

However, traditional chocolate and peanut butter desserts no longer fit my lifestyle.

So, a new keto version needed to take its place.

Creating a low-carb treat, like these gluten-free peanut butter brownies, gave this girl an excuse to enjoy chocolate and peanut butter goodness.

AND…it gives you another easy keto treat to try.

Clocking in at only 3.5 g net carbs, these low carb peanut butter brownies are the perfect way for chocolate lovers doing a keto diet to enjoy a brownie with a peanut butter layer for a tasty twist!

Ingredients Needed

Disclosure: Some of the links below are affiliate links, meaning at no additional cost to you, I will earn a commission if you click through and make a purchase. 

The following are the ingredients you’ll need to make this recipe. Note that the full printable recipe card is at the bottom of the page.

Keto Brownie Batter Base

• Baking chocolate
• Unsalted butter 
• Granulated sugar substitute
• Room temperature eggs
• Finely milled almond flour (measure then sift)
• Vanilla extract
• Baking powder
• Sea salt

Keto Peanut Butter Swirl

• Cream cheese, room temperature
• Sugar-free peanut butter
• Granulated sugar substitute
• Egg, room temperature
• Vanilla extract

How To Make Keto Peanut Butter Brownies

Before I share my keto peanut butter and chocolate brownies with you, let’s talk about the quality of your ingredients.

To begin with, your peanut butter needs to be an all-natural variety, one that has zero sugar added. This will ensure that it’s low in carbs and that it doesn’t throw you out of ketosis.

When using all-natural peanut butter, remember to stir it to ensure that it’s fully incorporated before mixing it into your keto peanut butter swirl brownie batter.

The quality of your chocolate also matters. Personally, I’m pretty partial to Baker’s Unsweetened baking chocolate because of its rich chocolate flavor.

This brand gives great, consistent results every time.

To make this peanut butter brownie recipe, preheat your oven to 350 degrees.

Lightly grease an 8 x 8 square-inch pan and line the bottom with parchment paper, leaving a couple of inches of overhang to facilitate easy unmolding after baking.

Next, melt the baking chocolate and butter together using a double boiler or microwaving in 15-second increments until entirely melted, stirring well before allowing the mixture to cool for about 5 minutes. 

Once cooled, add the sugar substitute to the chocolate and butter mixture, mixing thoroughly until well combined, then stir in the vanilla extract.

Incorporate the eggs one at a time, whisking well after each addition. Gradually add the sifted almond flour, baking powder, and salt, stirring until the batter is smooth.

Spread this brownie batter evenly into the prepared baking pan. 

For the peanut butter swirl, combine cream cheese, peanut butter, sugar substitute, egg, and vanilla extract in a large bowl using an electric mixer until fully blended.

Spoon dollops of this peanut butter mixture over the brownie base and use a thin knife to swirl it into the brownie batter, creating a marbled effect. 

Bake the brownies for approximately 20 to 35 minutes, checking for doneness at the 20-minute mark; the center should be just set but still slightly jiggly, as the brownies will continue to firm up while cooling.

After removing them from the oven, let the brownies cool completely on a baking rack for about 20 minutes.

Store any leftovers in an airtight container in the refrigerator for up to 5 days, or freeze for up to 3 weeks.

The Best Sugar Substitute For These Sugar-Free Brownies

I have several options regarding which sweetener you can use in my recipes. I really like Lakanto Monk Fruit because the texture is spot on and because there is barely any aftertaste.  

It’s the one sweetener that never gives me an issue.

I’m also partial to Swerve an erythritol blend, although it does have a cooling aftertaste that some people dislike. Personally, it’s not an issue for me, and it’s why I am a fan.

You could also use the stevia and erythritol-based brand Pyure for most of my baked goods. But for some reason, I find that chocolate and stevia do not play well together, and generally, it produces a greater aftertaste.

It’s also doubly sweeter than most sugar substitutes; you may need to add half the amount the recipe calls for when keto baking. 

So in the case of this recipe, I wouldn’t recommend it unless you’re familiar with it and it’s not an issue for you. 

Lastly, if you can’t easily find a more natural sugar substitute, you can also use Splenda with great success.

I know not everyone would agree with me here, and I respect that, but in my book, it’s still better than regular sugar. 

Can I Substitute Almond Butter For Peanut Butter?

But what if you can’t have peanut butter, or you’re looking for a way to reduce your carbs further?

That’s not a problem. I’ve created this recipe several times with almond butter instead of peanut butter, and guess what? Almond butter also goes amazingly well with chocolate.

So, if you have a peanut allergy or don’t include legumes in your diet, don’t let that deter you from this easy keto brownie recipe.

Tag Us

I sure hope you will give my keto peanut butter brownie recipe a try. Once you do, make sure you remember to tag us on Instagram and Facebook. It’s what keeps this girl encouraged to keep sharing and perfecting her recipes.

Also, check out our Amazon Store for our recommendations. You might be surprised by how many great keto options are at your disposal.

Grab Our Books & Keto App

In case you don’t know, we have authored two books for you, Essential Keto Bread and Essential Keto Desserts, both inspired by your requests over the years.

I pray these keto cookbooks will help make keto a delicious breeze for you.

Gain access to simple and delicious recipes for breakfast, lunch, dinner, snacks, and even desserts with our FITTOSERVEGROUP APP.

Join Our Jesus And Keto Movement 

Are you looking for an online support system to help you stay on keto? As a family, we came to the keto diet, looking at it from a Christian perspective. As believers, we live our lives supported by God’s grace.

Knowing firsthand the benefits of this decision, we have created a closed Christian group using the keto diet to transform their lives.

We invite you to join our Private Facebook Group and see if it’s not the key you’ve been missing.

Be sure to request our FREE Jesus and Keto E-Book (First 7 Days). We hope it blesses you.