Streusel Plum Cake

Ingredients

• 1/4 cup margarine
• 3/4 cup Sugar
• 2 Eggs separated
• 1 1/2 cup all-purpose flour
• 1 tsp baking powder
• 1/2 cup skim milk
• 2 cups halved ripe plums
• 1/2 cup packed brown sugar
• 1 tbsp soft margarine
• 1 tsp cinnamon
• 1 Glaze
• 1/4 cup icing sugar
• 1 tsp milk
• 1/4 tsp vanilla