Chocolate Chip Blondies

Bahan-bahan (18 porsi)

• 1½ cups butter (softened)
• 2 cups light brown sugar
• 2 eggs
• 1 tablespoon vanilla
• 2 cups all-purpose flour*
• ½ teaspoon kosher salt
• 1 teaspoon baking powder
• 1¼ cup chocolate chips
• ¾ cup chopped pecans
• 1⅓ cups brown rice flour
• ⅓ cup tapioca flour
• ⅓ cup potato starch