Keto Peanut Butter Brownies
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 any occasion, they will satisfy your sweet tooth without compromising your diet. With only 3 net carbs per serving, these brownies are a standout treat that everyone will love.
Why You’ll Love This Recipe
- Deliciously Rich Flavor: Enjoy the decadent taste of chocolate and peanut butter in every bite.
- Low Carb Delight: These brownies fit perfectly into your keto lifestyle with just 3 net carbs per serving.
- Quick and Easy Preparation: With simple steps and easy-to-find ingredients, you can whip these brownies up in no time.
- Versatile Treat: Great for parties, snacks, or a late-night dessert—these brownies are sure to impress!
- Gluten-Free Option: Made with almond flour, this recipe is gluten-free and suitable for various dietary needs.

Tools and Preparation
To make these keto peanut butter brownies, you’ll need a few essential tools to ensure success in your baking adventure.
Essential Tools and Equipment
- 8×8-inch square baking pan
- Parchment paper
- Mixing bowls
- Electric mixer
- Measuring cups and spoons
Importance of Each Tool
- 8×8-inch square baking pan: The perfect size for achieving the ideal brownie texture.
- Electric mixer: Helps to quickly combine ingredients for a smooth, creamy consistency.
- Parchment paper: Makes it easy to lift out the brownies after baking without sticking.
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 Batter
- Prepare FitBake brownie mix batter according to package instructions and bake in a square 8×8-inch pan. Allow to cool completely.
- If making from scratch:
- Preheat oven to 350°F.
- Line an 8×8-inch square baking pan with parchment paper.
- In a bowl, stir together all dry brownie ingredients.
- Add melted butter and eggs; stir until combined.
- Fold in sugar-free chocolate chips.
Step 2: Bake the Brownies
- Spread brownie batter evenly into the prepared pan.
- Bake for 15-18 minutes or until a toothpick comes out clean. Allow cooling once done.
Step 3: Make the Peanut Butter Layer
- In a bowl, combine creamy peanut butter, powdered sweetener, and softened butter.
- Beat with an electric mixer until smooth.
- Spread this mixture evenly on top of the cooled brownies. Place in the refrigerator while preparing the ganache.
Step 4: Prepare the Chocolate Ganache
- In a microwave-safe bowl, combine sugar-free chocolate chips and unsalted butter.
- Heat in increments of 20 seconds until fully melted; stir until smooth.
Step 5: Assemble the Brownies
- Remove brownies from refrigerator and pour melted chocolate evenly over the peanut butter layer.
- Return entire pan to refrigerator until chocolate sets or let sit at room temperature until firm.
Step 6: Slice and Serve
- Once set, slice into 16 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 prefer them as a simple dessert or with a twist, here are some serving suggestions to elevate your experience.
Serve with Whipped Cream
- Light and airy whipped cream adds a delightful contrast to the rich brownies. You can use sugar-free whipped cream for a keto-friendly option.
Pair with Fresh Berries
- Fresh raspberries or strawberries provide a burst of flavor and color. The tartness complements the sweetness of the brownies perfectly.
Drizzle with More Peanut Butter
- A drizzle of creamy peanut butter enhances the nutty flavor. Warm it slightly for an easier pour over the brownies.
Ice Cream on the Side
- Sugar-free vanilla ice cream makes an indulgent pairing. Serve it alongside the brownies for a classic dessert experience.
Top with Chopped Nuts
- Sprinkle chopped almonds or pecans on top for added crunch. This will give your brownies an extra layer of texture.
Serve Warm
- Enjoying these brownies warm from the oven, perhaps with a scoop of ice cream, takes them to another level of deliciousness.
How to Perfect Keto Peanut Butter Brownies
Achieving the perfect keto peanut butter brownies is all about technique and attention to detail. Follow these tips for brownie perfection.
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Use Quality Ingredients: High-quality cocoa powder and sugar-free sweeteners will enhance the flavor and texture of your brownies.
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Don’t Overmix: When combining ingredients, mix just until combined to avoid tough brownies. This keeps them fudgy and moist.
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Check Oven Temperature: Ensure your oven is properly calibrated. An accurate temperature is crucial for baking success.
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Cool Completely: Allow brownies to cool completely before slicing. This helps them set properly and prevents crumbling.
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Store Properly: Keep leftovers in an airtight container in the fridge. They can last up to a week while maintaining their taste and texture.
Best Side Dishes for Keto Peanut Butter Brownies
Pairing side dishes with keto peanut butter brownies can enhance your dessert experience. Here are some excellent options:
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Sugar-Free Gelato: A refreshing option that complements the rich flavors of the brownies without adding carbs.
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Coconut Whipped Cream: This dairy-free alternative offers a tropical flair while keeping it low-carb.
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Chia Seed Pudding: A nutritious side that adds fiber; consider making it with almond milk for a keto-friendly treat.
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Keto Cheesecake Bites: Mini cheesecakes provide a rich contrast to the brownies while staying within your dietary limits.
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Nut Butter Dip: A simple mix of almond butter and cocoa powder creates a delicious dip for those who want extra indulgence.
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Dark Chocolate Bark: Homemade dark chocolate bark with nuts makes an elegant side that pairs well with fudgy desserts.
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Zucchini Bread Slices: Moist and flavorful, zucchini bread adds variety while still being low in carbs.
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Cream Cheese Frosting: Use this creamy topping on top of brownie squares for added richness and flavor enhancement.
Common Mistakes to Avoid
When making Keto Peanut Butter Brownies, avoiding common pitfalls can lead to a better baking experience and delicious results.
- Using the wrong sweetener: Always choose a sugar-free sweetener that measures like sugar. This ensures the right texture and sweetness level in your brownies.
- Overmixing the batter: Mixing too much can create dense brownies. Stir just until ingredients are combined for a light, fudgy texture.
- Not cooling properly: Allow the brownies to cool completely before adding toppings. This prevents melting and ensures even layering of peanut butter and chocolate.
- Skipping the parchment paper: Lining the pan with parchment paper helps in easy removal of brownies. Skipping this step may lead to messy cutting and serving.
- Ignoring oven temperature: Make sure your oven is preheated correctly. An incorrect temperature can affect baking time and result in undercooked or overcooked brownies.

Storage & Reheating Instructions
Refrigerator Storage
- Store keto peanut butter brownies in an airtight container.
- They will stay fresh for up to one week.
Freezing Keto Peanut Butter Brownies
- Place brownies in a freezer-safe container or wrap them tightly in plastic wrap.
- They can be frozen for up to three months.
Reheating Keto Peanut Butter Brownies
- Oven: Preheat the oven to 350°F. Place brownies on a baking sheet and heat for about 10 minutes.
- Microwave: Warm a brownie on a microwave-safe plate for about 15-20 seconds for a soft texture.
- Stovetop: Place a brownie on a non-stick pan over low heat for a few minutes until warmed through.
Frequently Asked Questions
Here are some common questions about making Keto Peanut Butter Brownies.
Are Keto Peanut Butter Brownies healthy?
Keto peanut butter brownies are low in carbs and high in fats, making them suitable for ketogenic diets. They offer a guilt-free dessert option.
Can I use natural peanut butter?
Yes, you can use natural peanut butter as an alternative. Just ensure it is creamy and unsweetened for best results.
How do I customize my Keto Peanut Butter Brownies?
You can add nuts, seeds, or different types of sugar-free chocolate chips to enhance flavor and texture.
What if I don’t have almond flour?
If you don’t have almond flour, you can substitute it with coconut flour; however, you’ll need to adjust the quantity since coconut flour absorbs more moisture.
Can I make these brownies dairy-free?
Absolutely! You can replace butter with coconut oil or vegan butter for a dairy-free option.
Final Thoughts
These Keto Peanut Butter Brownies are not only delicious but also versatile enough to suit various dietary needs. Their rich flavor combined with creamy peanut butter makes them an irresistible treat. Feel free to customize them with your favorite toppings or mix-ins!
Keto Peanut Butter Brownies
Indulge in the delightful decadence of Keto Peanut Butter Brownies, a perfect treat for anyone on a low-carb diet. These fudgy brownies are rich with the irresistible combination of chocolate and creamy peanut butter, topped with a luscious chocolate ganache. With only 3 net carbs per serving, you can satisfy your sweet cravings without compromising your health goals. Whether you’re hosting a gathering or enjoying a cozy night in, these brownies are sure to impress. Easy to prepare with simple ingredients, they make a fantastic dessert that everyone will love!
- Prep Time: 15 minutes
- Cook Time: 18 minutes
- Total Time: 33 minutes
- Yield: Makes approximately 16 servings
- Category: Dessert
- Method: Baking
- Cuisine: Keto
Ingredients
- FitBake fudge brownie mix
- Blanched almond flour
- Sugar-free sweetener
- Unsalted butter
- Creamy peanut butter
- Sugar-free chocolate chips
Instructions
- Preheat the oven to 350°F and line an 8×8-inch baking pan with parchment paper.
- Prepare the FitBake brownie mix according to package instructions or combine dry ingredients (almond flour, sweetener, cocoa powder, baking powder, and salt) in a bowl. Add melted butter and eggs; stir until well mixed.
- Fold in sugar-free chocolate chips and spread the batter evenly in the prepared pan.
- Bake for 15-18 minutes or until a toothpick comes out clean. Allow to cool completely.
- For the peanut butter layer, beat together creamy peanut butter, powdered sweetener, and softened butter until smooth. Spread over cooled brownies and refrigerate.
- For the ganache, melt sugar-free chocolate chips with unsalted butter in increments of 20 seconds in the microwave until smooth; pour over the peanut butter layer.
- Let set before slicing into squares.
Nutrition
- Serving Size: 1 brownie (45g)
- Calories: 190
- Sugar: 2g
- Sodium: 160mg
- Fat: 16g
- Saturated Fat: 5g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 7g
- Fiber: 4g
- Protein: 5g
- Cholesterol: 40mg