Sweet Vanilla Bean Biscotti

Bahan-bahan (18 porsi)

• 2 and 1/4 cups (281g) all-purpose flour (spooned & leveled), plus more for work surface + hands
• 1 cup (200g) vanilla sugar or granulated sugar* (see note before starting)
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1/4 cup (4 Tbsp; 56g) unsalted butter, cold and cubed
• 3 large eggs
• 1 Tablespoon (15ml) vegetable oil or melted coconut oil
• 2 teaspoons pure vanilla extract
• egg wash: 1 large egg beaten with 1 Tablespoon (15ml) milk
• optional: two 4 ounce (226g) white chocolate bars, coarsely chopped*