Once the yams are fork tender, strain them in a colander. Set aside.
Preheat the oven to 350 degrees F. If making the yams ahead of time, no need to preheat the oven at this point.
For Layer #1: to the greased baking dish, add an even layer of half the quantity of the cooked yams. Lightly sprinkle half the quantity of salt on the yams. Evenly drizzle half the quantity of the maple syrup on the yams.
Evenly sprinkle half the quantity of the ground cinnamon on the yams. Top the yams with half the quantity of the small cubes of butter (add the butter evenly around the yams so it's not all in one area).
Evenly add half the quantity of the brown sugar and half the amount of chopped pecans on top of the yams.
For Layer #2 - add an even layer of the remaining yams, salt, maple syrup, ground cinnamon, small cubes of butter, brown sugar and pecans.