Mix dry ingredients in mixing bowl.
Add eggs, oil and buttermilk to dry ingredients and mix until combined.
Gently fold in the baby food prunes.
Pour into a greased 9 x 13 inch baking dish.
Bake at 350 degrees for 40 to 45 minutes.
Combine all glaze ingredients in a saucepan and bring to a gentle boil.
Boil for 2 minutes and pour hot glaze over warm cake straight from the oven.
