S'Mores Bars

Bahan-bahan (16 porsi)

• 12 tablespoons unsalted butter (softened)
• ½ cup granulated sugar
• ½ cup light brown sugar (tightly packed)
• 1 large egg
• ½ teaspoon vanilla extract
• 1 ¼ cup all-purpose flour (+ 2 tablespoons)
• 1 cup graham cracker crumbs
• ½ teaspoon baking powder
• ½ teaspoon salt
• 1 cup marshmallow fluff
• 3 milk chocolate bars (broken into quarters)
• ½ cup milk chocolate chips