Sunsweet® Prune Upside Down Cake – sunsweet

Ingredients

• 4 Tbsp butter, unsalted
• 3/4 cup brown sugar
• 3 cups Sunsweet® Pitted Prunes
• 1 stick butter, unsalted
• 1 cup sugar
• 1 tsp vanilla extract
• 2 eggs, separated
• 1 1/2 cups flour, all-purpose
• 2 tsp baking powder
• 1/4 tsp salt
• 1/2 cup milk
• 1/4 tsp cream of tartar