Preheat your oven to 350°F (175°C). Grease a 9-inch round cake pan and set it aside.
In a bowl, whisk together the flour, graham cracker crumbs, baking soda, and salt. Set this dry mixture aside.
In a separate mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until it's light and fluffy.
Beat in the egg and vanilla extract until well combined.
Gently fold in the Nutella until it's swirled into the mixture.
Gradually add the dry ingredients mixture to the wet mixture, stirring until everything is incorporated.
Fold in the milk chocolate chips for an extra layer of sweetness.