Equipment
Ingredients
Dry Ingredients
- 160 g buckwheat flour, certified gluten-free
- 30 g unsweetened cocoa powder, Dutch-processed
- 4 g baking powder
- 2 g fine sea salt
Wet Ingredients and Sugar
- 130 g granulated sugar
- 2 eggs, room temperature
- 35 g unsalted butter, melted and cooled
- 5 ml vanilla extract
Inclusions
- 100 g dark chocolate, chopped into 6mm chunks
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 86 kcal
- Protein
- 2 g
- Carbohydrates
- 13 g
- Fat
- 3 g
- Fiber
- 1 g
- Sugar
- 8 g
- Sodium
- 59 mg
- Saturated Fat
- 2 g
- Potassium
- 88 mg
- Calcium
- 20 mg
- Iron
- 0.9 mg
- Magnesium
- 30 mg
- Phosphorus
- 53 mg
- Zinc
- 0.4 mg
- Vitamin A
- 17 mcg
- Vitamin C
- 0 mg
- Water
- 4 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat the oven to 175°C (350°F) and line a flat baking sheet with parchment paper.
Sift the buckwheat flour, cocoa powder, baking powder, and fine sea salt through a sifter into a medium mixing bowl, then briefly whisk to aerate.
In a large mixing bowl, beat the eggs and granulated sugar together vigorously with a whisk for 2 to 3 minutes until the mixture turns pale, frothy, and slightly ribbons.
Pour the melted and cooled unsalted butter and vanilla extract into the egg and sugar mixture, whisking gently until thoroughly incorporated.
Add the sifted dry ingredients into the wet mixture and fold gently using a silicone spatula until a cohesive, slightly tacky dough forms with no dry flour pockets.
Scatter the chopped dark chocolate over the dough and fold with the silicone spatula until the pieces are evenly distributed throughout.
Turn the dough out onto the prepared baking sheet and shape into two logs, each approximately 20 cm (8 inches) long, 6 cm (2.5 inches) wide, and 2 cm (0.8 inches) tall, leaving at least 8 cm (3 inches) of space between them.
Bake on the center oven rack at 175°C (350°F) for 25 minutes, ensuring the egg base cooks safely past 71°C (160°F) until the logs are matte, slightly cracked on top, and firm at the outer edges.
Transfer the baking sheet with the logs directly to a wire cooling rack and allow the logs to cool undisturbed for 25 minutes; they have a crumbly texture hot from the first baking and must cool to gain cutting stability.
Transfer one log to a flat cutting surface and cut carefully into 13 mm (1/2 inch) thick slices using a gentle, continuous sawing motion with a serrated bread knife, avoiding downward crushing pressure, then repeat with the second log.
Arrange the sliced biscotti cut-side down in a single layer on the parchment-lined baking sheet, leaving a small gap between each piece for air circulation.
Return the sheet to the oven at a reduced temperature of 150°C (300°F) and bake for 15 minutes, flipping the slices over halfway through the duration, until completely dried and firm.
Transfer the twice-baked biscotti from the baking sheet onto the wire cooling rack and cool completely for 20 minutes to achieve their signature dry, snappy crunch.
Chef's Notes
- Buckwheat flour is a botanical seed flour naturally free of gluten; its earthy, mineral profile does not overpower the cookie but instead serves as a grounding backdrop that elevates rich dark chocolate.
- Because gluten is absent, egg proteins supply the entire structural network for this dough. Maintain exact egg measurements to prevent structural weakness.
- Always rely on a long, sharp serrated bread knife for slicing the baked logs. Allow the knife teeth to saw gently through the crumb and chocolate chunks rather than pressing straight down.
- Store fully cooled biscotti in an airtight container at room temperature alongside a food-safe desiccant pack or wrapped tightly in parchment to preserve crispness for up to 2 weeks.
Storage
Freezer: 1 month — Freeze fully cooled biscotti in a rigid airtight container with parchment paper between layers.
Reheating: Warm on a baking sheet at 150°C (300°F) for 5 minutes to restore crispness if softened.
Troubleshooting
Biscotti crumble into uneven pieces during slicing
Cause: The logs were sliced while still hot from the initial bake, or were cut thinner than 13 mm (1/2 inch) without sufficient structural support.
Fix: Cannot be fixed once broken, but broken pieces can still be baked along with whole slices to make crispy cookie clusters.
Prevention: Allow the logs to cool for a full 25 minutes after the first bake, cut strictly at 13 mm (1/2 inch) thickness, and use a light sawing motion with a sharp serrated knife.
Biscotti remain soft or bend slightly after the second baking and cooling
Cause: Insufficient baking time during the second dry-out bake or high atmospheric humidity.
Fix: Return the biscotti to a 150°C (300°F) oven for an extra 5 to 7 minutes, then allow to cool completely on the wire cooling rack.
Prevention: Verify oven temperature with an oven thermometer and ensure biscotti are baked until cut surfaces feel dry and firm.
Cultural Context
Biscotti, traditionally known as cantucci in Tuscany, trace their history back to ancient Roman military rations, perfected during the Renaissance as twice-baked almond biscuits crafted for long storage. While conventional Tuscan versions use wheat flour, alpine Italian regions such as Lombardy have long utilized buckwheat (grano saraceno) in rustic baked goods. This gluten-free recipe honors that alpine tradition, blending hearty buckwheat flour with rich chocolate for a modern interpretation designed to be dunked in espresso or sweet vin santo.
