Pumpkin Blondies

INGREDIENTS

• 2½ cups all-purpose flour
• 2½ teaspoons ground cinnamon
• ¾ teaspoon ground ginger
• ½ teaspoon ground allspice
• ½ teaspoon ground nutmeg
• ½ teaspoon salt
• 1 cup unsalted butter, melted and cooled to room temperature
• 1 cup dark brown sugar
• ½ cup granulated sugar
• 1 egg
• 1 tablespoon vanilla extract
• 1 (15-ounce) can pure pumpkin puree (about 2 cups)
• 1 cup butterscotch chips
• 1 cup white chocolate chips
• 1 cup pecans, coarsely chopped