Make the coconut pecan topping while the pie is in the refrigerator. Drop the egg yolks into a small bowl and whisk in 1 tablespoon of dark brown sugar until combined. Set the bowl aside.
Add the remaining dark brown sugar, evaporated milk, and butter to a small saucepan over medium heat, and stir until the sugar has dissolved. Remove from heat, and pour about ¼ cup of the brown sugar mixture into the egg yolks, and whisk quickly to temper the yolks.
Place the saucepan back over medium heat and pour the egg yolk mixture into the saucepan. Whisk until the mixture starts to thicken and bubble, then remove from the heat immediately. Mix in the salt, vanilla, coconut flakes, and chopped pecans. Set the topping aside to cool.
Once the pie has been in the fridge for two hours, spoon the coconut and pecan topping on top of the pie evenly. Cover the pie with plastic wrap and chill for another 2-3 hours or until the ganache is completely set.
Serve chilled.