Cinnamon Pumpkin Bars

Bahan-bahan (16 porsi)

• ¾ cup (1½ sticks) unsalted butter
• 1⅓ cups packed light or dark brown sugar
• 1 teaspoon vanilla extract
• ¾ teaspoon baking powder
• ½ teaspoon salt
• 2 teaspoons ground cinnamon
• ¾ teaspoon ground ginger
• ¼ teaspoon ground cloves
• ¼ teaspoon ground allspice
• 1 large egg
• 1 cup canned unsweetened pumpkin puree
• ¾ cup whole wheat flour
• ¾ cup all purpose flour
• 1 cup cinnamon chips ((plus a few more to sprinkle on top))