Orange and Dark Chocolate Biscotti recipes

Name: Orange and Dark Chocolate Biscotti recipes
Ingredients: 1/4 cup (1/2 stick) unsalted butter, room temperature; 1 cup granulated sugar; 2 large eggs; 2 tablespoons finely grated orange zest (from 1 orange); 1 tablespoon freshly squeezed orange juice; 3/4 teaspoon vanilla extract; 1/4 teaspoon almond extract; 2 1/2 cups all-purpose flour; 1 teaspoon baking powder; 1/4 teaspoon salt; 1/3 cup slivered almonds; 1 cup dark chocolate chips or chunks; 6 ounces dark chocolate, melted (optional - for dipping)