Preheat oven to 350°
Heat the butter and unsweetened chocolate (coarsely chopped) in a small sauce pan over low heat stirring until melted and smooth. ￼
remove the pan from the heat and whisk in the sugar until smooth. Pour in a medium bowl and set aside to cool for 10 minutes. ￼
Whisk the eggs in one at a time. Whisk in the flour, vanilla, and salt￼.
fold and the chocolate morsels and pecans. Pour into the piecrust. ￼
Bake until just set an a crust forms on top, about one hour. Cool to room temperature on wire rack. ￼
just before serving, dust with powdered sugar.￼