New Zealand Squares - cooking recipe

Ingredients

1/4 cup margarine
1/2 cup sugar
1 tablespoon cocoa powder
1 egg
1/2 lb graham cracker crumbs
1 teaspoon vanilla extract
3/4 cup raisins, soaked and drained
chocolate icing

Preparation

Melt together first 3 ingredients until bubbly; remove from heat, add egg and beat well.
Add the rest of ingredients and mix.
Pack into a greased 8\"x8\" cake pan.
Drizzle with chocolate icing and refrigerate.