Ingredients:
Condensed Milk (carnation or Milkmaid) -1 tin
Cocoa Powder 1/2 cup
Butter - 1 stick or 50 gms
Chopped & roasted Nuts 100 gms
Sugar 3/4 cup 

Method:
1-Pour the condensed milk into a thick pan, add butter, sugar, cocoa powder and nuts to the pan. 
2-Stir constantly on low to medium heat till the mixture leaves the sides of the pan (say 15 mins) 
3-Pour evenly into a buttered dish. Allow to cool and set. Cut to pieces. 
4-Refrigerate if you like.