In a large bowl, stir together flour, graham cracker crumbs, baking soda, salt. Set aside.
In a medium heat-resistant bowl, mix brown sugar and granulated sugar together. Set aside.
Place butter in 8-inch cast iron skillet and melt over low heat. Once butter has melted, grab skillet by handle with oven mitt and very carefully and slowly move butter around to coat the sides. Pour melted butter into medium bowl containing sugars. Add vanilla extract and whisk all together until smooth. Add egg and continue to whisk.
Pour liquid mixture into dry mixture and blend together with spatula until both are completely incorporated. Pour into prepared skillet and gently press it down with spatula. The dough will come all the way to the rim of the skillet.
Bake in middle rack for 20 minutes. Carefully remove skillet from oven and let cool for 20 minutes before cutting.
Serve immediately with a dollop of marshmallow creme and sprinkle chopped pecans on top. Enjoy!
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Dietary Fibers 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.