Nutella Stuffed Banana Cookies

Bahan-bahan (14 porsi)

• ½ cup Nutella ((or another chocolate hazelnut spread))
• 1 cup all purpose flour
• 2 cups whole wheat flour
• 1 teaspoon kosher salt
• ½ teaspoon baking soda
• ¾ cup unsalted butter, (at room temperature)
• ½ cup granulated white sugar
• ½ cup packed light brown sugar
• 1 large egg
• 1½ teaspoons vanilla extract
• ½ cup ripe banana, (mashed)
• 1 cup old fashioned rolled oats
• ¼ cup miniature chocolate chips