1 Preheat oven to 350 degrees F (175 degrees C). Grease and flour one 13×9 inch pan.
2 Combine the creamed corn with the white sugar and 1/2 cup of the dark brown sugar. Stir in the eggs and the oil.
3 Combine the baking powder, flour, baking soda, salt and ground cinnamon. Add the nuts and raisins.
4 Add the flour mixture to the corn mixture and stir until just combined. Pour batter into the prepared pan.
5 Bake at 350 degrees F (175 degrees C) for 30 to 35 minutes. Let cake cool completely then frost.
6 To Make Frosting: Bring the butter and 1/2 cup dark brown sugar to a boil. Remove from the heat. Add the heavy cream and the confectioners’ sugar. Mix until of frosting consistency. Add more confectioners’ sugar if necessary. Use to frost cooled cake.