Wholewheat Apple Cake (with frosting!)

4 fresh, diced apples
2 cups sugar
1/2 cup vegetable oil
2 teaspoon bicarbonate of soda
1 teaspoon salt
2 eggs
2 cups Wholewheat flour
2 teaspoons cinnamon
1 cup nuts (optional)
1 cup raisins/ cranberry's etc (optional)
2 teaspoons vanilla essence
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2 cups icing sugar
1/2 cup soft butter
4oz cream cheese
1 teaspoon vanilla essence

1. Place diced apples in bowl. Add sugar, oil,cranberry's, nuts, vanilla, bicarbonate of soda, salt and eggs and mix thoroughly
2. Sift dry ingredients together, then add to the apple mixture
3. Pour into a greased 9x13" pan and bake at 180 degree for 60 minutes
4. Leave to cool completely before adding frosting on the top.
To make the frosting:
1. Mix the butter and cream cheese until well blended together, add sifted icing sugar and vanilla and mix together till smooth.