Sprinkle in the graham cracker crumbs over the melted butter. Press the graham cracker crumb/butter mixture into the bottom of the pan to form a crust.
Sprinkle walnut pieces onto the crust. Next, sprinkle the chocolate chips over the walnuts.
Then sprinkle the coconut over the chocolate chips.
Open can of sweetened condensed milk, pour over the coconut, covering as much of the coconut as possible. The parts of the coconut without the sweetened condensed milk coating tend to burn.
Bake at 350 degrees for 25 minutes.
Allow to cool. It takes quite a bit of time to properly cool, however these are delightful melty and a little bit warm.
Notes
Feel free to switch up the nuts and try pecans instead of walnuts.