Keto Brownie Recipe: Fudgy, Low-Carb and Sugar-Free Treat

Who doesn’t love brownies? This recipe is the best homemade brownie recipe which is a delicious low carb and sugar free treat. 

Story Behind Keto Brownie Recipe

Whenever I think of brownies, I imagine my granny’s small kitchen, where I could always smell something wonderful baking. She wasn’t a professional baker, but everything she cooked reminded me of being hugged. Her brownies? Legendary. Just how we liked them: fudgy, chocolatey, and a little unmatured in the middle every time.

Surprisingly, this isn’t the full story. When I started eating low carb a few years back, those brownies reminded me of sweeter times… until today.

I created this keto brownie recipe due to missing the comfort of Granny’s home, and because I had to create it with low carbs. Remembering how good my granny’s keto brownies were, I wanted to continue with healthy eating. So, I got to work, pulled out the skills she taught me, and began with some experiments.

Predictably, batch after batch, I kept testing for better results such as utilizing less sugar, a richer chocolate and a better flour. I decided to create this almond flour brownie recipe. Then I came with this low carb, sugar free brownie mix which is chocolatey, very fudgy and perfectly suited to a low-carb or keto diet.

They’re more than healthy brownies with low carbs—their story adds even more value to them. A memory. A connection.

Fudgy Keto Brownies Recipe

Ingredients

You can use different ingredients for this brownie recipe and make a few adjustments to it according to your taste and diet preferences. 

Wet Ingredients

• 1/2 cup (113g) unsalted butter (or coconut oil for dairy-free)
• 3 oz (85g) unsweetened dark chocolate (70 %+ cocoa, no sugar added)
• 2 large eggs (room temperature)
• 1 tsp vanilla extract

Dry Ingredients

• 3/4 cup (75g) blanched almond flour (super-fine texture)
• 1/3 cup (30g) unsweetened cocoa powder (or raw cacao powder)
• 2/3 cup (100g) powdered erythritol or allulose
• 1/2 tsp baking powder
• 1/4 tsp fine sea salt

Optional Add-Ins

• 1/3 cup sugar-free chocolate chips
• 1/4 cup chopped walnuts or pecans
• 1 tsp espresso powder (optional, enhances chocolate)

You don’t like anything, or don’t have any ingredients available. No problem at all! You can also use Substitutions for some ingredients.

You don’t have to worry if something’s missing from your pantry or if you want to change what’s on the menu. You can switch up the ingredients in this recipe without losing the great taste or the texture.

Check out our more recipes.

New Options of Flour

The classic fudgy texture of this low carb brownie comes from almond flour, unless you can’t find it.

• A perfect equal part swap, hazelnut flour has a deep and nutty taste.
• Sunflower seed flour is an excellent way to eliminate nuts.
• Use Coconut flour one quarter less than regular flour, and make up for it with more egg or moisture.

Vegan Option:

You can use egg substitutes if you choose a vegan option.

When you’re creating vegan keto brownies:

• Add 1 tablespoon ground flaxseed to 2.5 tablespoons of water for every egg. Spread the yogurt jam after sitting it for 5 minutes.
• Eggs made from chia work just like eggs from flaxseed.
• A comparison between butter and coconut oil
• You can make a dairy-free version of your brownies just by omitting milk and butter.
• This recipe is lightened with coconut oil, which also makes it vegan.
• Butter made from grass-fed cows is a great substitute for people who don’t tolerate dairy.

Sweetener Alternatives

The quality of your sweetener is very important in any sugar-free brownie mix.

• Powdered erythritol provides good texture, but it may leave a slight cooling taste on your tongue.
• Allulose gives food a nice, smooth, and moist texture with no aftertaste.
• Often, people mix monk fruit blend with other sweeteners, for example, erythritol or allulose.
• Don’t use stevia on its own, as it’s too strong and too bitter for brownies.

Non-Keto Options

Keto isn’t your main diet? As an option, replace:

1. Coconut sugar
2. Maple syrup
3. Raw honey
4. You may use date sugar or paste.

Should I use Granular Sweetener?

Erythritol: Pros and Cons

• Pros: Zero calorie, 1:1 sugar replacement, good texture.
• Cons: Cooling aftertaste, may crystallize after baking.

Allulose: Best for Texture

• Pros: Perfect for a moist, fudgy texture. No aftertaste.
• Cons: Less sweet than sugar — may need more than a 1:1 ratio.

Monk Fruit Extract: Strong Flavor

• Pros: Natural, zero-carb.
• Cons: Best used in blends — too sweet and bitter on its own.

Why Stevia is Not Recommended

While it’s keto-friendly, stevia on its own is too intense for the best fudgy chocolate brownie recipe. It can also turn bitter when baked.

The Best Chocolate for Keto Brownies

Cocoa Percentage Recommendations

Always aim for at least 70% dark chocolate. 85-90% is ideal for keto.

Importance of High Quality

High-quality chocolate = rich, deep flavor + smooth texture. Low-grade chocolate often has fillers and added sugars.

Checking Nutritional Labels

Make sure it’s:

• Unsweetened or sugar-free
• Keto-compatible (no hidden carbs or sugars)

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Directions for the best Homemade Keto Brownies 

1. Prepare Your Pan Before the Food

It’s time to put your oven on 350°F (175°C). Cover the bottom and two sides of an 8×8-inch pan with parchment paper, so that you can lift the baked brownies more easily.

2. Chop the Chocolate and the Fat to melt them.

Put 4 oz chopped unsweetened dark chocolate and 1/3 cup coconut oil or butter in a bowl that can stand high temperatures. Melt the ingredients together on the stovetop or in the microwave in brief periods and stir again after each round, until you have a smooth glossy mixture. Take out of the oven and let it cool for a moment, then mix in 1 teaspoon vanilla extract.

3. Add all of the dry ingredients into one pot.

In a large mixing bowl, mix your ingredients by either sifting or whisking a cup of superfine blanched almond flour, ½ cup unsweetened cocoa powder, ½ cup powdered erythritol (or Besti allulose blend), ½ teaspoon baking powder and ¼ teaspoon sea salt. When you sift, you remove hard lumps and end up with a smooth mixture.

4. Mix wet and dry ingredients, then combine

Pour the thin chocolate onto the dry ingredients in the bowl. Mix just enough with a spatula or whisk until everything is mixed. The mixture will be very thick and rich.

5. Add Eggs

Add room-temperature large egg, one at a time, mixing the dough up well after each egg is added. It adds a lovely, creamy feel to the cupcakes. Don’t mix your batter for too long.

6. Include Optional Additions

If you’d prefer, mix in 1/3 cup of sugar-free chocolate chips or chopped pecans or walnuts at this stage.

7. Bake

Fill the batter into the baking pan so it is spread evenly. Leave the muffins in the oven for 18 to 22 minutes, until you use a toothpick and find a bit of moist crumb in the cupcake. The brownie mix should be slightly softer than you expect — it creates fudgier brownies.

How Many Carbs in This Recipe?

Each brownie has approximately 1.7g to 3g net carbs, depending on your sweetener and chocolate choice. Perfect for your keto diet brownies routine.

Storage Information

How Long Do Brownies Keep at Room Temperature

• 3 days covered at room temperature.

Refrigeration Tips

• Store in an airtight container up to 1 week for maximum freshness.

Freezing Instructions

• Freeze cooled brownies in a zip-top bag for up to 3 months. Place parchment between layers.

How to Reheat Brownies

• Microwave for 10–15 seconds, or reheat in a low oven until just warm.

Recipe Variations

Peanut Butter Brownies

Swirl in 2 tbsp natural peanut butter for extra richness.

Low-Carb Brownies with Walnuts

Fold in 1/4 cup chopped walnuts for a satisfying crunch.

Peppermint Brownies

Add 1 tsp peppermint extract to the batter for a festive twist.

Salted Caramel Keto Brownies

Top with a drizzle of sugar-free caramel sauce and a sprinkle of flaky salt.

Adapt the Recipe to Your Diet

• Vegan Keto Brownies: Use flax or chia eggs.
• Dairy-Free Keto Brownies: Use coconut oil or vegan butter.
• Gluten-Free Brownies: Naturally GF with almond flour — just double-check your chocolate and baking powder.
• Sugar-Free Brownies: Stick to erythritol, allulose, or monk fruit.
• High-Protein Keto Brownies: Sub 1/4 cup almond flour with unflavored whey or plant-based protein powder.

Is it possible to make a sugar-free fudge keto brownie?

These keto diet brownies are best to satisfy your sweet craving and keep your diet in balance. It is a healthy sugar free brownie recipe that you can enjoy without having to worry about calories.