"From TSR e-newsletter. Part of cooking time includes 3 hours in the fridge to chill...."
INGREDIENTS
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1 (18 1/4 ounce) betty crocker white cake mix
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1 1/4 cups water
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1/3 cup oil
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3 egg whites
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8 ounces cream cheese, softened
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2 cups powdered sugar
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4 teaspoons lemon juice
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1 cup heavy whipping cream
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1/2 cup all-purpose flour
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1/2 cup powdered sugar
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1/4 cup cold butter
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1/2 teaspoon vanilla extract
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powdered sugar (for garnish)