01 -
Line 2 cookie sheets with parchment paper and set aside.
02 -
In a large mixing bowl, combine the butter, light brown sugar, granulated sugar, eggs, and vanilla. Mix until light and fluffy.
03 -
In a medium bowl, whisk together the flour, salt, and baking powder.
04 -
Add the dry ingredients to the wet ingredients and blend until combined.
05 -
Stir in the chopped chocolate, marshmallows, and graham cracker pieces.
06 -
Divide the dough into 12 balls, approximately 4.6 ounces each. Place the balls on the prepared cookie sheets.
07 -
Refrigerate the cookie dough for 1 hour.
08 -
Preheat the oven to 350°F (175°C).
09 -
If using the optional topping, bake for 10 minutes, remove from the oven, and add toppings (marshmallows, graham cracker pieces, and chocolate bar pieces). Return to the oven and bake for an additional 8 minutes.
10 -
If not using the optional topping, bake the cookies for 18 minutes.
11 -
Slide the cookies, still on the parchment paper, onto the counter to cool completely.