Heath bar coffee cake

1 cup brown sugar

1/2 cup white sugar

1/2 cup shortening

1 teaspoon vanilla

2 cups flour

1 cup buttermilk

1 egg

1 teaspoon baking soda

3 Heath bars, chopped fine

1/2 cup nuts

Mix sugars, shortening and vanilla. Add flour and mix to crumb stage. Remove 1/2 cup and set aside. Add buttermilk, egg, and baking soda to remaining mixture. Pour into 10-by-10-by-2  pan. Add Heath bars and 1/2 cup nuts to the mixture that was set aside. Sprinkle over batter. Bake at 350 degrees for 30-35 minutes.