Step 1

Melt the chocolate and butter in a saucepan over medium-low or low heat.

Step 2

In a large mixing bowl, combine the sifted powdered sugar and eggs, mixing well but carefully, as it dusts up quite a bit!

Step 3

Add the melted chocolate mixture and vanilla extract to the bowl with powdered sugar and eggs. Mix thoroughly to incorporate

Step 4

Add the nuts if desired and mix to thoroughly incorporate.

Step 5

With a spatula, pour chocolate fudge mixture into a well-greased 8x8" pan. Refrigerate for at least 3 hours, or until firm. Slice into (bite sized pieces and serve. Refrigerate when it's not being served.