Black Plum Cake - California Grown

Ingredients

• 4-5 black plums
• 1.5 cups white flour
• 1.5 tsp baking powder
• 1 tsp ground cinnamon
• 1/4 tsp nutmeg
• 1/2 tsp salt
• 1 cup butter, (softened)
• 1 cup sugar
• 1 egg
• 1 tsp vanilla
• 1/2 cup milk
• 4 tsp additional sugar, (divided )