Wonderfully crisp and crunchy and brimming with nutty flavour, these Keto biscotti are the perfect partner for a hot cup of tea or coffee at any time of year.

Biscotti, also known as cantucci, are twice-baked, oblong Italian almond biscuits that were created in the city of Prato.
While some people associate them with the holiday season and Christmas, they're traditionally enjoyed all year round.
The word biscotto actually originates from the medieval word "biscoctus", which means "twice cooked". This rendered the cookies extra dry and crunchy and they could be stored for long periods of time.
Ingredients
Traditionally, biscotti are made with flour, sugar, eggs and almonds or pine nuts. To lower the carb count, my keto biscotti contain almond flour. I also replaced the sugar with granulated erythritol.
Here are all the ingredients:
- Almond flour
- Sweetener
- Baking powder
- Sea salt
- Egg
- Almond extract
- Pistachios and pecans
A quick word about almond flour: I'm using ground almonds, which is equivalent to regular almond flour in the US. If you want to use super-fine almond flour, consider reducing the amount by 1 tablespoon to prevent your dough from becoming dry.
Instructions
(This section contains step by step instructions and photos that show how to make this recipe. Find the recipe card with ingredient amounts and nutritional information at the bottom of the post.)

1.) Mix the dry ingredients in a bowl - almond flour, granulated erythritol, baking powder, nuts and the pinch of salt.
2.) Add the wet ingredients - beaten egg and almond extract. Stir, then knead until a dough forms.

3.) Roll the dough into a log shape and place on a cookie sheet lined with parchment paper. Mine was 28 centimetres long.
4.) Flatten into an oblong biscotti shape - flat at the bottom, rounded at the top. Bake on the middle shelf for 25-30 minutes until lightly browned.

5.) Remove from the oven and let cool completely. Then cut into biscotti slices with a serrated knife.

6.) Return to the oven for another 12-15 minutes to allow the biscotti to crisp up. Rotate the baking sheet if you notice that the biscuits at the back brown faster than the ones in the front.
Top tips
Biscotti recipes with wheat flour can be rolled into a log and will spread into the oblong shape whilst in the oven. This does not happen with almond flour biscotti. Be sure to flatten your log into the desired shape!
Almond flour lacks gluten and is therefore more fragile. Use the sharpest serrated knife you own for cutting the log. Also, to prevent the cookies from breaking, I pressed the side of the cookie I was cutting against the log to stabilise it.
FAQ
No. I recommend erythritol based sweeteners. Use either pure erythritol, or a monk fruit or stevia blend. They make the crunchiest cookies. Xylitol or allulose won't set as hard.
Butter is not an ingredient in traditional biscotti.
If you do, the cookie slices will brown more all over. To prevent this, you could try reducing the oven temperature and leave them in for longer.
Variations
Vary the nuts. I used half pistachios and half pecans. Almonds, hazelnuts, pine nuts and pistachios can be used whole. If you're using large nuts such as walnuts or pecans, break them into slightly smaller pieces first so they don't stick out of your log.
Vanilla extract. I think it's the almond extract that makes the recipe taste special. But if you don't have it, vanilla extract or powdered vanilla bean also works.
More Christmas flavor. Add 1 teaspoon of orange extract or 1 teaspoon grated orange zest. Or add winter spices such as 1 teaspoon cinnamon, ¼ teaspoon crushed cardamom and ⅛ teaspoon nutmeg. ¼ cup of sugar free dried cranberries would also work well!
Chocolate. Dip one end of the keto biscotti in sugar free chocolate or drizzle melted dark chocolate (minimum 85% cocoa solids) over them. You could even add ¼ cup sugar free chocolate chips to the dough before baking.

Storage
Low carb biscotti should be stored like any other cookie: In an airtight cookie jar. They stay fresh for several weeks.
You can also store them in the freezer for up to 3 months.
Related recipes
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Recipe

Extra Crispy Keto Biscotti
from Sugar Free LondonerNote: The servings slider only changes the first amount in each line and not any subsequent amounts. Please make your own calculations where necessary. ***As an Amazon Associate I earn from qualifying purchases.
Ingredients
- 1 ¼ cup / 125g almond flour or ground almonds (reduce by 1 tablespoon if using extra-fine almond flour)
- ½ cup / 60g pistachios and pecans almonds and hazelnuts also work
- ¼ cup / 50g granulated erythritol
- ¾ teaspoon baking powder
- pinch of sea salt
- 1 egg
- 1 teaspoon almond extract
Instructions
- Preheat the oven to 180 C / 350 F electric or 160C / 320F fan.
- Mix the dry ingredients in a bowl - almond flour, granulated erythritol, baking powder, whole pistachios, crushed pecans and the pinch of salt.
- Add the wet ingredients - beaten egg and almond extract - and stir, then knead until a dough forms.
- Roll the dough into a log shape. Mine was 28 cm long. Flatten into a biscotti shape.
- Bake on the middle shelf for around 25-30 minutes until lightly browned.
- Remove from the oven and let cool completely. The log will firm up. Then cut into biscotti with a serrated knife and lay down flat next to each other on the baking sheet. See tips for slicing in the recipe notes.
- Reheat the oven to 180 C / 350 F and return to the oven for another 12-15 minutes to allow the biscotti to crisp up.
Video
Notes
Nutrition
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Kelly McLaughlin
Fabulous and very easy
Lori Sharpe
I'm getting ready to make these and wondered if it calls for 1/2 cup pecans and pistachios, in total, or if it is 1/2 cup of each nut. It looks simple and delicious, and I wish it were already finished!
Katrin Nürnberger
It's 1/2 cup in total.
Shiderette R
Made them last night with walnuts and cranberries. I can't keep my hands off them! One of the best keto cookie recipes I've made, so far!
dezi
Hi Katrin, I couldn't get these to crisp up. With only 1 wet ingredient and very few dry ingredients, how could this not have worked? They were a good flavor, but not crisp, no matter how long they baked. Did yours get crisp and dry?
Katrin Nürnberger
Yes, these are the crispiest cookies in my repertoire. As you say, there are very few wet ingredients. How long did you bake them?
dezi
Hi Katrin, Thank you. I baked for 30 minutes and then had to add on even more time. I really liked the flavor and was drawn to the crunchy description, but I just couldn't attain the texture described. Do you use large eggs as a standard in your recipes? Maybe my large egg was too big. What do you think? Thank you, again. Dezi
Katrin Nürnberger
I used a large egg. Did you measure the dry ingredients in grams?
Janet
Just made these! Easy and delicious, however, I am a chocolate girl at heart. If I wanted to add cocoa powder for a chocolate version what do you recommend regarding recipe changes?
Katrin Nürnberger
Perhaps 1 tablespoon almond flour less, add 2 tablespoon cocoa powder and you may also need more sweetness.
Franni Ferrero
A favorite of my family and friends. Easy to make too!
Cat
Unfortunately I can't take erythritol. Is there anyway to use allulose with added egg whites to add crispness? Thank you.
Katrin Nürnberger
No, allulose is not a good idea because it sets soft. Perhaps Bocha Sweet is another option.
Cat
Would I also add egg whites plus the Bocha sweet? Would it be the same amount in grams for the Bocha sweet as erythritol? Thank you for any advice.
Katrin Nürnberger
Yes, I would use the same amount of Bocha Sweet. I used a whole egg. But I think just using an egg white would probably work as well.