Castagnaccio – Traditional Tuscan Chestnut Flour Cake

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This traditional Tuscan chestnut flour cake is usually served in the fall and winter months following the annual chestnut harvest. It features a deep, rich, earthy flavor quite unlike typical cakes and desserts found elsewhere.

In fact, classic versions of this recipe do not include any form of sugar or other sweetener. Instead, they rely on the addition of dried fruit and chestnut flour to impart a bit of sweetness. Here, a little honey is added to offset the stronger flavors. Even so, you may find castagnaccio is a bit of an acquired taste if you prefer more sugary treats.

Tip: For best results, sift the chestnut flour before using. If you don’t have a flour sifter, add chestnut flour to a small fine mesh strainer and gently shake over the mixing bowl to remove any clumps.

Castagnaccio – Traditional Tuscan Chestnut Flour Cake

Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes

Ingredients
  

  • 1/3 c. raisins divided
  • 2 T. fresh rosemary leaves
  • 3 c. chestnut flour sifted
  • 1 2/3 c. lukewarm water
  • 2 T. honey*
  • 2 T extra virgin olive oil
  • ¼ c. chopped walnuts divided
  • ¼ c. pine nuts divided
  • *Honey is optional. Use more or less honey depending on level of sweetness
  • desired.

Instructions
 

  • 1. Soak raisins and rosemary leaves in a small bowl of lukewarm water. Set aside.
  • 2. Position oven rack to center position. Preheat oven to 350°F and grease a 9” pie pan with olive oil or non-stick cooking spray. Set aside.
  • 3. In a large bowl, combine chestnut flour, water, honey, and olive oil with a fork. Continue stirring until a smooth batter forms. If batter is too thick, add another tablespoon or two of water to thin slightly.
  • 4. Drain raisins and rosemary leaves and pat dry. Add half of the raisins, walnuts, and pine nuts to batter and stir to combine.
  • 5. Pour batter into prepared pie pan and spread with a spatula to form a smooth, uniform layer. Evenly distribute rosemary and remaining raisins, walnuts, and pine nuts on top of batter.
  • 6. Place pan in pre-heated oven and bake for 30-35 minutes or until the top is dried and starting to crack.
  • 7. Remove from oven and cool slightly before cutting into thin slices and serving.
  • Enjoy!
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