DIRECTIONS
In a mixing bowl, combine the sugars, oil, egg and lemon peel; mix well. Combine the flour, baking soda and salt; add to sugar mixture alternately with buttermilk. Stir in plums. Pour into two greased 8-in. x 4-in. loaf pans.
Combine topping ingredients; sprinkle over batter. Bake at 350° for 60-70 minutes or until a toothpick inserted near the center comes out clean. cool for 10 minutes before removing from pans to wire racks to cool completely. Yield: 2 loaves.