Keto Peanut Butter Brownies
Learn how to make the best keto peanut butter brownies! These delicious treats are perfect for any occasion, whether it’s a family gathering, a casual get-together, or simply a satisfying dessert at home. Rich and fudgy, these brownies are topped with creamy peanut butter and a chocolate ganache that will delight your taste buds. Enjoy all of this while keeping your carb count low, with only 3 net carbs per serving!
Why You’ll Love This Recipe
- Low Carb Delight: Each brownie contains just 3 net carbs, making them perfect for keto diets.
- Decadent Flavor: The combination of rich chocolate and creamy peanut butter creates an indulgent treat.
- Quick and Easy: With simple steps and minimal prep time, these brownies can be made in under an hour.
- Versatile Serving Options: Perfect as a dessert or snack, they fit any occasion.
- Kid-Friendly: These brownies are sure to please both kids and adults alike!
Tools and Preparation
Having the right tools makes preparation easy and enjoyable. Here’s what you’ll need to create these mouthwatering keto peanut butter brownies.
Essential Tools and Equipment
- 8×8-inch baking pan
- Mixing bowls
- Electric mixer (optional)
- Measuring cups and spoons
- Parchment paper
Importance of Each Tool
- 8×8-inch baking pan: Ideal size for even baking; ensures the brownies cook through without burning.
- Mixing bowls: Essential for combining ingredients without mess; allows for easy mixing and stirring.
- Electric mixer: Saves time when beating mixtures smooth; great for achieving the perfect texture in the peanut butter layer.

Ingredients
To make these tasty Keto Peanut Butter Brownies, you’ll need the following ingredients:
For the Brownies
- 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)
For the Peanut Butter Layer
- 2/3 cup creamy peanut butter
- 1/4 cup unsalted butter
- 1/2 cup sugar-free powdered sweetener
For the Chocolate Ganache
- 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 according to package instructions in an 8×8-inch pan. Allow it to cool once baked.
- Alternatively, 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; mix until well combined. Fold in chocolate chips.
- Spread the brownie batter evenly into the lined pan.
Step 2: Bake the Brownies
- Bake for 15–18 minutes or until a toothpick comes out clean. Let them cool completely before proceeding.
Step 3: Make the Peanut Butter Layer
- In a bowl, combine peanut butter, powdered sweetener, and softened butter.
- Use an electric mixer to beat until smooth.
- Spread this mixture evenly over the cooled brownies.
Step 4: Prepare the Chocolate Ganache
- In a microwave-safe bowl, combine chocolate chips and butter.
- Heat in 20-second increments until melted; stir until smooth.
Step 5: Assemble and Chill
- Pour melted chocolate over the peanut butter layer and spread evenly. Refrigerate until set.
Step 6: Slice and Enjoy!
- 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. Here are some creative serving suggestions to elevate your dessert experience.
With Fresh Berries
- Strawberries: Their sweetness complements the rich chocolate and peanut butter flavors perfectly.
- Raspberries: The tartness of raspberries adds a refreshing contrast to the fudgy brownies.
Topped with Whipped Cream
- Coconut Whipped Cream: A dairy-free option that provides a light, fluffy texture and enhances the brownie’s richness.
- Sugar-Free Whipped Topping: For those looking for convenience, this store-bought option is an easy way to add creaminess.
Drizzled with Nut Butter
- Almond Butter: A drizzle of almond butter adds an extra layer of nuttiness and flavor.
- Cashew Butter: This creamy alternative offers a smooth texture that pairs well with the brownies.
Served à la Mode
- Sugar-Free Vanilla Ice Cream: A scoop on top turns these brownies into a decadent dessert.
- Keto-Friendly Chocolate Ice Cream: For chocolate lovers, this is the perfect match for an indulgent treat.
How to Perfect Keto Peanut Butter Brownies
Perfecting your keto peanut butter brownies will ensure they turn out fudgy and delicious every time. Here are some tips to keep in mind.
- Use Room Temperature Ingredients: Bringing eggs and butter to room temperature helps create a smoother batter, ensuring even baking.
- Do Not Overmix: Gently fold ingredients together to keep the brownies from becoming tough. Overmixing can lead to a denser texture.
- Check for Doneness Early: Oven temperatures vary. Start checking your brownies a few minutes before the recommended baking time for optimal fudginess.
- Let Them Cool Completely: Cooling allows the flavors to meld and makes slicing easier. Warm brownies may crumble when cut.
- Store Properly: Keep leftovers in an airtight container in the refrigerator to maintain freshness.
Best Side Dishes for Keto Peanut Butter Brownies
Pairing side dishes with keto peanut butter brownies can enhance your dessert experience. Here are some great options.
- Fresh Fruit Salad: A mix of berries, melons, and citrus adds brightness and freshness alongside rich brownies.
- Chia Seed Pudding: This creamy, low-carb pudding offers a nutritious complement that balances out the sweetness of the brownies.
- Greek Yogurt Bowl: Top plain Greek yogurt with nuts or seeds for a protein-packed side that pairs nicely with dessert.
- Nutty Granola: A small serving of low-carb granola provides crunch and texture that contrasts beautifully with soft brownies.
- Coconut Chips: Lightly toasted coconut adds a tropical twist and crunch that’s delightful next to rich desserts.
- Cheese Platter: A selection of hard cheeses can provide a savory balance against the sweet, nutty flavors of the brownies.
Common Mistakes to Avoid
Making keto peanut butter brownies can be a delightful experience, but there are a few common pitfalls to watch out for.
- Using the Wrong Sweetener: Choosing a sweetener that isn’t sugar-free can alter the carb count significantly. Always opt for powdered or granulated sugar-free options to keep your brownies low in carbs.
- Overbaking the Brownies: Overbaking can lead to dry brownies. Keep a close eye on them in the oven and perform a toothpick test; they should be moist but set.
- Skipping the Refrigeration Step: Not refrigerating the brownies after adding the peanut butter and chocolate layers can result in a messy serving. Make sure to let them chill until set for clean slices.
- Using Regular Peanut Butter: Regular peanut butter often contains added sugars and oils, which can increase carbs. Use creamy, sugar-free peanut butter for the best results.
- Not Measuring Ingredients Accurately: Baking is a science, so accurate measurements are crucial. Always use measuring cups and spoons for precision.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container.
- They will stay fresh for up to one week.
Freezing Keto Peanut Butter Brownies
- Wrap individual brownies tightly in plastic wrap.
- Place them in a freezer-safe container or bag.
- They can be frozen for up to three months.
Reheating Keto Peanut Butter Brownies
- Oven: Preheat to 350°F and warm brownies for about 10 minutes.
- Microwave: Heat one brownie for about 15-20 seconds until warm.
- Stovetop: Place on a skillet over low heat, flipping occasionally until warmed through.
Frequently Asked Questions
If you’re curious about making keto peanut butter brownies, here are some common questions.
What are Keto Peanut Butter Brownies?
Keto peanut butter brownies are low-carb desserts made with ingredients like almond flour and sugar-free sweeteners, perfect for those on keto diets.
Can I substitute almond flour?
Yes, you can use coconut flour as an alternative, but be aware that you’ll need to adjust the amount since coconut flour absorbs more moisture.
How many carbs are in Keto Peanut Butter Brownies?
Each serving contains only 3 net carbs, making them an excellent treat for anyone following a low-carb diet.
Can I add nuts or chocolate chips?
Absolutely! Feel free to mix in chopped nuts or extra sugar-free chocolate chips for added texture and flavor.
Final Thoughts
These keto peanut butter brownies offer a rich and fudgy dessert experience while keeping your carb intake low. They’re perfect for satisfying your sweet tooth without straying from your dietary goals. Plus, you can customize them with various toppings or mix-ins to suit your taste. Give this recipe a try today!
Keto Peanut Butter Brownies
Indulge in the delightful world of Keto Peanut Butter Brownies, where rich chocolate meets creamy peanut butter for a truly decadent treat! These fudgy brownies are not only incredibly satisfying but also fit perfectly into a low-carb lifestyle with just 3 net carbs per serving. Ideal for family gatherings, friendly get-togethers, or as a simple dessert at home, this easy recipe delivers big flavor with minimal fuss. Topped with a luscious chocolate ganache and made with wholesome ingredients like almond flour and sugar-free sweeteners, these brownies are both guilt-free and delicious. Get ready to impress your friends and family with these irresistible keto treats!
- Prep Time: 15 minutes
- Cook Time: 18 minutes
- Total Time: 33 minutes
- Yield: Serves 16 brownies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- FitBake fudge brownie mix
- 1 cup blanched almond flour
- 1/2 cup powdered or granulated sugar-free sweetener
- 1/3 cup Dutch cocoa powder
- 1/4 tsp baking powder
- 1/4 tsp salt
- 6 Tbsp unsalted butter (melted)
- 2 large eggs
- 1/2 cup sugar-free chocolate chips
- 2/3 cup creamy peanut butter
- 1/4 cup unsalted butter
- 1/2 cup sugar-free powdered sweetener
- 3/4 cup sugar-free chocolate chips
- 2 tbsp unsalted butter
Instructions
- Preheat oven to 350°F and line an 8×8-inch baking pan with parchment paper.
- Prepare brownie mix according to package instructions or combine dry ingredients (almond flour, sweetener, cocoa powder, baking powder, salt) in a bowl.
- Add melted butter and eggs to the dry mixture; mix well and fold in chocolate chips. Spread batter evenly in the prepared pan.
- Bake for 15–18 minutes until a toothpick comes out clean. Allow to cool completely.
- For the peanut butter layer, beat together peanut butter, sweetener, and softened butter until smooth. Spread over cooled brownies.
- For the ganache, melt chocolate chips and butter together until smooth; pour over the peanut butter layer.
- Refrigerate until set before slicing into squares.
Nutrition
- Serving Size: 1 brownie (45g)
- Calories: 190
- Sugar: 1g
- Sodium: 150mg
- Fat: 16g
- Saturated Fat: 6g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 9g
- Fiber: 6g
- Protein: 5g
- Cholesterol: 30mg