Preheat oven to 350 degrees.

Into a large bowl combine flour, baking soda and salt. Using a whisk mix the ingredients until well incorporated. Set aside until needed.

Using another large bowl combine melted butter, granulated sugar and brown sugar. Whisk for 2-3 minutes until incorporated.

Next add vanilla extract, 1/2 cup of your peanut butter & egg. Combine all ingredients.

Slowly add in flour mixture until completely combined. 

Next add in 1/2 cup worth of chocolate chips. Mix all ingredients together.

Grease 2 mini cast iron skillets with baking cooking spray. 

Divide cookie dough batter into 4 sections. Add 1/4 of dough into the skillets. Flatten dough out.

Next evenly divide remaining 1/4 cup peanut butter into each skillet. Then add marshmallow fluff.

Finally add remaining cookie dough into each skillet. 

Bake skillets in oven for 18-20 minutes until cooked all the way through.

Serving optional: Top each skillet with vanilla ice cream. 

If you want to drizzle peanut butter and chocolate on top...microwave 1/2 cup chocolate chips with 1 tsp coconut oil in 30 second intervals until melted. Repeat step with remaining 1/4 cup peanut butter. Serve & enjoy!