Line a 8x8 or 9x9 cake pan with wax paper. Combine the semi-sweet chocolate chips and sweetened condensed milk in a saucepan over medium low heat and stir.
Keep stirring till the chips melt completely and the mixture is creamy and lump-free. Remove from the heat.
Stir in the vanilla extract and all of the crushed nuts. Mix Well. Pour into the cake pan and press lightly to the edges.
Allow the fudge to cool and set overnight and then cut into 3/4 inch pieces to serve.
For the best texture, store in an air tight container in the fridge.