I don't strictly apply the 1 cup of fruit rule, as I do use whatever I have, and particularly put apples or peaches on the top as a sort of topping. Also, I often add coconut to the recipie, about 1/2 a cup. It seems to be a very forgiving recipie in that regard.
Picnic Fruit Slice
Rating: Moderate (but once you have made it - easy)
Ingredients:1-1/2 cups Self Raising Flour
1 cup fruit
3 oz butter
1 cup sugar
MethodCream butter, vanilla, sherry and sugar, add eggs one at a time. Fold in Flour and fruit.
Bake in a lined slice tin at 350C until cooked.