German Chocolate Pie

Whisk the egg yolks, sugar, flour, salt, and milk together in a saucepan.

Cook over medium heat, stirring constantly, until the custard thickens enough to coat a spoon.

Stir in the melted German chocolate, then remove the pan from the heat.

Add the vanilla, most of the coconut, the pecans, and softened butter, and stir until glossy.

Cool the filling, pour it into the baked pie shell, chill until set, and top with whipped cream before serving.