Learn how to make the best keto peanut butter brownies! These low carb buckeye brownies are rich, fudgy, and topped with creamy peanut butter and chocolate ganache. Perfect for parties or a sweet treat at home, they only have 3 net carbs per serving. Enjoy the delightful combination of flavors that will satisfy your chocolate cravings while keeping your diet on track.
Why You’ll Love This Recipe
- Low Carb Delight: These brownies contain only 3 net carbs per serving, making them a perfect choice for keto followers.
- Rich Flavor: With a fudgy texture and a decadent peanut butter topping, these brownies are indulgent without the guilt.
- Easy to Make: This recipe is straightforward, making it ideal for both novice and experienced bakers.
- Versatile Treat: Great for desserts, snacks, or even as a party dish—everyone will love them!
- Gluten-Free Option: Made with almond flour, they cater to gluten-sensitive individuals without sacrificing taste.
Tools and Preparation
To make these delicious keto peanut butter brownies, you will need some essential tools. Having the right equipment helps ensure your baking process is smooth and enjoyable.
Essential Tools and Equipment
- Mixing bowls
- Electric mixer
- 8×8-inch square baking pan
- Parchment paper
- Microwave-safe bowl
- Sharp knife
Importance of Each Tool
- Electric mixer: Makes it easy to combine ingredients quickly and achieve a smooth consistency for your peanut butter layer.
- 8×8-inch square baking pan: The perfect size for even baking, ensuring your brownies cook properly without burning.
Ingredients
Learn how to make the best keto peanut butter brownies! These low carb buckeye brownies are rich, fudgy, and topped with creamy peanut butter and chocolate ganache. Only 3 net carbs per serving!
Brownie Base
- 1 bag FitBake fudge brownie mix (prepared according to package instructions)
- 1 cup blanched almond flour (112g)
- 1/2 cup powdered or granulated sugar-free sweetener (96g)
- 1/3 cup Dutch cocoa powder (27g)
- 1/4 tsp baking powder (1g)
- 1/4 tsp salt (1.5g)
- 6 Tbsp unsalted butter (melted) (84g)
- 2 large eggs
- 1/2 cup sugar-free chocolate chips (112g)
Peanut Butter Layer
- 2/3 cup creamy peanut butter
- 1/4 cup unsalted butter
- 1/2 cup sugar-free powdered sweetener
Chocolate Ganache Topping
- 3/4 cup sugar-free chocolate chips
- 2 tbsp unsalted butter

How to Make Keto Peanut Butter Brownies
Step 1: Prepare the Brownie Base
- Prepare FitBake brownie mix batter and bake it in an 8×8-inch square pan according to package instructions. Allow it to cool completely.
Step 2: Make the Homemade Option (If Preferred)
- Preheat your oven to 350°F.
- Line an 8×8-inch square baking pan with parchment paper.
- In a mixing bowl, stir all dry brownie ingredients together.
- Add melted butter and eggs; stir until combined.
- Fold in sugar-free chocolate chips gently.
- Spread the brownie batter evenly into the prepared pan.
- Bake for 15-18 minutes. Once done, allow to cool completely.
Step 3: Prepare the Peanut Butter Layer
- In a bowl, combine creamy peanut butter, powdered sweetener, and softened butter.
- Beat with an electric mixer until the mixture is smooth.
Step 4: Assemble the Brownies
- Spread the peanut butter mixture evenly over the cooled brownies in the pan.
- Place in the refrigerator while preparing the ganache.
Step 5: Make the Chocolate Ganache Topping
- In a microwave-safe bowl, combine sugar-free chocolate chips and two tablespoons of unsalted butter.
- Heat in increments of 20 seconds until melted; stir until smooth.
Step 6: Final Assembly
- Remove the brownies from the refrigerator.
- Pour and spread melted chocolate evenly over the peanut butter layer.
- Return to the refrigerator until set or allow it to set at room temperature if preferred.
Step 7: Slice and Serve
- Once set, slice into squares using a sharp knife.
- Enjoy your delicious keto peanut butter brownies!
How to Serve Keto Peanut Butter Brownies
Keto peanut butter brownies are a delightful treat that can be enjoyed in various ways. Whether you’re hosting a gathering or having a cozy night in, here are some serving suggestions to enhance your experience.
Pair with Whipped Cream
- This adds a light and fluffy texture that complements the dense brownies beautifully.
Serve with Fresh Berries
- Raspberries or strawberries provide a refreshing contrast to the rich chocolate and peanut butter flavors.
Drizzle with Extra Chocolate Sauce
- A little extra sauce can elevate the decadence of these keto brownies and make them even more indulgent.
Enjoy with a Scoop of Keto Ice Cream
- The creaminess of keto ice cream pairs perfectly with these fudgy brownies for an ultimate dessert experience.
Top with Chopped Nuts
- Sprinkle some crushed walnuts or pecans for added crunch and flavor that enhances each bite.
Dust with Cocoa Powder or Cinnamon
- A light dusting can add an elegant touch and additional flavor without extra carbs.
How to Perfect Keto Peanut Butter Brownies
Creating the perfect keto peanut butter brownies is all about attention to detail. Here are some tips to ensure your brownies turn out just right.
- Use Quality Ingredients: Choose high-quality sugar-free sweeteners and cocoa powder for the best flavor.
- Don’t Overbake: Keep an eye on your brownies while baking; they should be fudgy, not dry.
- Cool Completely: Allowing the brownies to cool completely helps set their texture and makes slicing easier.
- Store Properly: Keep leftovers in an airtight container in the fridge for freshness.
- Experiment with Toppings: Try different toppings like sea salt or coconut flakes to add unique flavors.
- Adjust Sweetness: Feel free to customize the sweetness level by adjusting the amount of sweetener used.

Best Side Dishes for Keto Peanut Butter Brownies
These keto peanut butter brownies can be complemented by several delicious side dishes. Here are some great options to consider:
- Keto Cheesecake Bites: Mini cheesecake bites made with cream cheese and almond flour that are creamy and satisfying.
- Nutty Trail Mix: A combination of nuts and seeds for a crunchy snack that pairs well with sweet treats.
- Chocolate Avocado Mousse: A rich, creamy dessert that’s also healthy and low in carbs, ideal for chocolate lovers.
- Coconut Flour Cookies: Light, chewy cookies that are easy to make and add variety to your dessert spread.
- Sugar-Free Jello Cups: Refreshing cups of jello that provide a fun, colorful contrast alongside brownies.
- Zucchini Chips: Crispy baked zucchini chips offer a savory crunch, balancing out the sweetness of the brownies.
- Cheese Platter: A selection of your favorite cheeses can create an interesting flavor combination when paired with desserts.
- Almond Flour Pancakes: Fluffy pancakes made from almond flour serve as a delightful breakfast side dish option.
Common Mistakes to Avoid
Making keto peanut butter brownies can be easy, but a few common mistakes can lead to less-than-perfect results. Here are some things to watch out for:
- Using the wrong sweetener: Not all sugar substitutes work well in baking. Choose a sweetener that measures cup-for-cup like sugar for the best results.
- Overmixing the batter: Mixing too much can lead to dense brownies. Stir until just combined for a fudgy texture.
- Not letting them cool: Cutting into warm brownies can cause them to crumble. Allow them to cool completely before slicing.
- Ignoring baking times: Every oven is different. Keep an eye on your brownies and test with a toothpick to ensure they are not overbaked.
- Skipping the ganache: The chocolate ganache adds richness and moisture. Don’t skip this step for the ultimate flavor experience.
Storage & Reheating Instructions
Refrigerator Storage
- Duration: Store in the refrigerator for up to 1 week.
- Containers: Use an airtight container to keep them fresh.
Freezing Keto Peanut Butter Brownies
- Duration: Freeze for up to 3 months.
- Containers: Place brownies in a freezer-safe bag or airtight container, separating layers with parchment paper.
Reheating Keto Peanut Butter Brownies
- Oven: Preheat to 350°F, place brownies on a baking sheet, and heat for about 10 minutes until warmed through.
- Microwave: Heat individual squares for 15-20 seconds on medium power.
- Stovetop: Place brownies in a pan over low heat, covering with a lid until warmed.

Frequently Asked Questions
What makes these Keto Peanut Butter Brownies special?
These keto peanut butter brownies are unique because they combine low-carb ingredients with rich flavors, making them perfect for those following a keto diet while satisfying sweet cravings.
Can I use another nut butter instead of peanut butter?
Yes! You can substitute almond butter or sunflower seed butter if you prefer or have nut allergies.
Are these Keto Peanut Butter Brownies gluten-free?
Absolutely! They are made using almond flour and sugar-free ingredients, making them suitable for gluten-free diets as well.
How do I know when my brownies are done baking?
To check if your brownies are done, insert a toothpick into the center. It should come out with a few moist crumbs but not wet batter.
Final Thoughts
These keto peanut butter brownies offer a deliciously rich and fudgy dessert option that’s perfect for any occasion. With just 3 net carbs per serving, they fit seamlessly into a low-carb lifestyle. Feel free to customize your batch by adding nuts or different flavors of chocolate chips! Try this recipe today and enjoy guilt-free indulgence!

Keto Peanut Butter Brownies
Indulge in the delightful world of keto-friendly desserts with these rich and fudgy peanut butter brownies. Perfect for satisfying your sweet cravings, these brownies feature a luscious peanut butter topping and a decadent chocolate ganache, all while maintaining a low-carb profile with just 3 net carbs per serving. Easy to make and completely gluten-free, this recipe is ideal for both special occasions and everyday treats. Whether you enjoy them at home or serve them at a gathering, your guests will be begging for seconds. Enjoy guilt-free indulgence that aligns perfectly with your keto lifestyle!
- Total Time: 33 minutes
- Yield: 16 servings
Ingredients
- FitBake fudge brownie mix
- Blanched almond flour
- Sugar-free sweetener (powdered or granulated)
- Dutch cocoa powder
- Unsalted butter
- Eggs
- Creamy peanut butter
- Sugar-free chocolate chips
Instructions
- Prepare the brownie base according to the FitBake instructions or by mixing dry ingredients with melted butter and eggs. Bake in an 8×8-inch pan until set.
- Allow brownies to cool completely.
- Mix creamy peanut butter, sweetener, and softened butter until smooth and spread over cooled brownies.
- For the ganache, melt chocolate chips and butter together until smooth; pour over the peanut butter layer.
- Refrigerate until set, then slice into squares.
- Prep Time: 15 minutes
- Cook Time: 18 minutes
- Category: Dessert
- Method: Baking
- Cuisine: Keto
Nutrition
- Serving Size: 1 serving
- Calories: 180
- Sugar: 1g
- Sodium: 125mg
- Fat: 15g
- Saturated Fat: 6g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 6g
- Fiber: 3g
- Protein: 5g
- Cholesterol: 40mg
Keywords: Use high-quality cocoa powder for richer flavor. Customize by adding nuts or different sugar-free chocolate varieties.
 






