Mocha Chip Biscotti - Diamond Nuts

Ingredients

• 2 cups + 2 Tablespoons (265g) all-purpose flour (plus more for your hands)
• 1 Tablespoon unsweetened natural or dutch processed cocoa
• 1 cup (200g) light or dark brown sugar
• 1 teaspoon baking powder
• 1/2 teaspoon ground cinnamon
• 1/2 teaspoon salt
• 1/4 cup unsalted butter, cubed
• 3 large eggs
• 2 Tablespoons instant coffee dissolved in 2 Tablespoons warm water*
• 1 Tablespoon canola or vegetable oil (or melted coconut oil)
• 1 teaspoon vanilla extract
• 1 cup mini chocolate chips*
• egg wash: 1 large egg beaten with 1 Tablespoon (15ml) milk
• Topping
• 1/2 cup chopped hazelnuts
• 8 ounces semi-sweet chocolate, coarsely chopped