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Castagnaccio (Tuscan Chestnut Cake)

Castagnaccio (Tuscan Chestnut Cake)

Italian
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50 minutes
4 people
Medium31–60 min or 7–12 steps

50 min · 8 steps

Medium: 31–60 min or 7–12 steps

420 kcalper person
Protein 6g
Carbs 58g
Fats 18g

About this dish

A beautifully austere Tuscan flatbread-cake made with chestnut flour, rosemary-infused olive oil, pine nuts, and raisins. The batter rests before baking to fully hydrate the flour, producing a moist, fudgy interior beneath a cracked, golden, olive-oil-crisped crust. Naturally sweet, vegan, and utterly unforgettable.

Allergy Info

Tree Nuts

Diet Info

Vegan

Ingredients

Fresh Produce

  • Fresh rosemaryleaves picked and roughly chopped2 sprigs
  • Orangezested1 zest

Dried Goods

  • Chestnut floursifted300 g
  • Cold water400 ml
  • Pine nuts50 g
  • Raisinssoaked in warm water for 10 minutes and drained50 g
  • Caster sugaroptional1 tbsp

Spices & Seasonings

  • Fine sea salt1 pinch

Oils & Condiments

  • Extra-virgin olive oil3 tbsp
  • Extra-virgin olive oil, for infusing rosemary3 tbsp
  • Extra-virgin olive oil, for the pan to taste

Utensils

  • Large mixing bowl
  • Small bowl
  • Whisk
  • Sieve / sifter
  • 26–28 cm round cake tin or cast-iron skillet
  • Pastry brush or paper towel (for oiling pan)
  • Oven

Method

1

Combine the rosemary leaves with 3 tbsp olive oil in a small bowl and set aside to infuse while you prepare the batter.

Approx. 5 minutes
2

Soak the raisins in warm water for 10 minutes, then drain and set aside.

Approx. 10 minutes
3

Sift the chestnut flour into a large bowl with the salt and optional sugar. Gradually whisk in the cold water, starting with a small amount and adding more slowly, until you have a smooth, lump-free batter the consistency of thin cream. Stir in the orange zest and 3 tbsp olive oil.

Approx. 10 minutes
4

Rest the batter uncovered at room temperature for 30 minutes to allow the chestnut flour to fully hydrate.

Approx. 30 minutes
5

Preheat the oven to 220°C (200°C fan / 425°F). Generously oil a 26–28 cm round cake tin or cast-iron skillet with olive oil and pour in the rested batter — it should sit no deeper than 1 cm.

Approx. 5 minutes
6

Scatter the drained raisins and pine nuts evenly over the surface, then drizzle the rosemary-infused oil over the top, letting the rosemary leaves fall across the batter.

Approx. 3 minutes
7

Bake for 30–35 minutes until the surface is deeply cracked, the edges have pulled away from the tin, and the top feels set and dry to the touch — a few darker patches at the cracks are desirable, not a problem.

Approx. 35 minutes
8

Remove from the oven and cool in the tin for at least 10 minutes before slicing. Serve warm or at room temperature, drizzled with a thin thread of your best olive oil.

Approx. 10 minutes