Puffed Wheat Cake

Puffed Wheat Cake (for all the non-believers :o)

2/3 cup butter or margerine
2 cups brown sugar
2 tsp vanilla
1 cup corn syrup
4 tbsp cocoa
12 cups puffed wheat cereal

In a large saucepan, melt butter. Add syrup, sugar and cocoa. Bring to just a boil. Remove from heat, stir in vanilla and add puffed wheat. Stir well. Put into greased 9x13 pan, press down with buttered spoon and let cool. Cut into squares.