INGREDIENTS
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1 box white cake mix, 18.25 oz. I used Duncan Hines
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2 box lemon pudding 3.5 oz ea
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1 cup vanilla Greek yogurt, I used Chobani
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1 cup vegetable oil
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4 egg whites, lightly beaten
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¼ cup fresh lemon juice
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zest from 2 lemons
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1 teaspoon vanilla
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1 cup butter softened
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1 cup shortening
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7 cups powdered sugar
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1 teaspoon salt
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2 teaspoons vanilla
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10 oz white chocolate melted and cooled
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1/3 cup water