Pumpkin Pie Biscotti

Bahan-bahan (12 porsi)

• 3 1/2 cups all-purpose flour
• 1 1/2 cups firmly packed brown sugar
• 2 tsp . baking powder
• 1/2 tsp . salt
• 2 tsp . pumpkin pie spice, store-bought or homemade (see tip below for substitution)
• 1/2 cup pumpkin puree
• 2 large eggs, lightly beaten
• 1 Tbsp . vanilla paste (or 1 Tbsp. vanilla extract)
• 2 Tbsp . butter or margarine
• 1 1/4 cup pecans or walnuts, coarsely chopped
• 1/4 cup melted white chocolate, for drizzling or dipping (optional)