Hazelnut Torte - Lidia

Ingredients

• 1 ½ cups hazelnuts, toasted and with skins rubbed off
• 1 ½ cups all-purpose flour, plus some for the cake pan
• 1 teaspoon baking powder
• ¼ teaspoon salt
• 1 cup plus 2 tablespoons sugar
• 6 tablespoons soft butter, plus a bit for the cake pan
• 3 large eggs
• 1 tablespoon extra-virgin olive oil
• ½ tablespoon finely grated orange zest
• 1 cup milk at room temperature
• 4 tablespoons semisweet chocolate, chopped by hand in small pieces
• Garnish: powdered sugar or whipped cream