"I was young when I married, so I watched my mother-in-law to learn baking. This cake with fresh blueberries is one of her beauties. —Bonnie Roberts, Newaygo, Michigan..."
INGREDIENTS
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4 cups fresh or frozen unsweetened blueberries, thawed
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1/2 cup sugar
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2 cups miniature marshmallows
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1 package yellow cake mix (regular size)
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1/2 teaspoon grated lemon zest
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Whipped topping