For the Crust
Preheat oven to 350 degrees
In a large bowl combine the melted butter, flour, brown sugar and pecans with a fork
Push crust into a 9 inch pie dish and bake in the oven for 15-20 minutes or just until the crust begins to brown
For the chocolate crème
Using a medium sauce pan, combine the milk and chocolate chips
Place sauce pan over high heat and gradually stir until melted, about 1-2 minutes
In a large bowl, mix together the egg yolk, and sugar until the eggs turn a pale yellow
Mix in the cornstarch, salt, and vanilla until combined
Gradually combine the chocolate mixture into the egg mixture. Make sure you are whisking the egg mixture while pouring the chocolate mixture into it to avoid scrambling the eggs
Pour the combined mixture back into the sauce pan and place on the stove on medium to high heat and bring to a boil while gradually whisking the mixture.
Remove from heat and whisk for about 2 minutes
Pour chocolate crème into the baked pie crust
Cover the chocolate crème with plastic wrap and place into the fridge for 5 hours
For the meringue
In a large bowl, scoop the marshmallow fluff into the bowl and set aside
Using a standing mixer, beat the egg whites, salt and cream of tarter until foamy.
Gradually beat in the sugar into the egg whites until stiff peaks form
Gently fold in the egg whites into the marshmallow fluff until fully incorporated
Spoon half of the marshmallow meringue into a piping bag and the other half onto the top of the pie
Spread evenly with a knife
Pipe meringue all across the top of the pie
Preheat oven to 350 degrees or you can use a kitchen flame torch
Using the oven, place pie in middle rack for 5-8 minutes or until the meringue is lightly browned
Using a flame torch, lightly toast the meringue
Sprinkle mini chocolate chips and pecans onto the top of the pie
Enjoy!