Light Blueberry Kuchen

Ingredients

• 1 1/2 cups all-purpose flour
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt (optional)
• 4 egg whites
• 2 tablespoons granulated sugar
• 2/3 cup motts natural applesauce (or lite)
• 1/4 cup nonfat plain yogurt
• 1 teaspoon lemon zest
• 2 cups blueberries (fresh or frozen, do not thaw if frozen. Fresh is best!)
• 1/4 cup brown sugar
• 2 tablespoons solid pack pumpkin
• 1/4 cup oats