1In a glass bowl, mix together 1 cup of butter (room temperature), 1 cup of brown sugar, and 1/2 cup of granulated sugar.
2Add 2 eggs and mix well using a hand mixer.
3In a separate bowl, sift together 1 1/2 cups of cake flour, 1 1/2 cups of all-purpose flour, 1 tsp of cornstarch, 3/4 tsp of baking soda, and 3/4 tsp of salt.
4Add the dry ingredients to the wet ingredients and mix until just combined.
5Roast the walnuts in a preheated oven.
6Add 2 cups of chocolate chips, 2 cups of graham crackers, 2 cups of marshmallows, and 1 cup of roasted walnuts to the cookie dough.
7Mix until everything is evenly distributed.
8Roll the cookie dough into balls and place them onto a baking sheet lined with parchment paper.