"Reese's peanut butter cups and Reese's pieces give these gooey cake bars an extreme hit of peanut butter goodness...."
INGREDIENTS
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1 chocolate cake mix
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1 egg
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1/2 cup butter, softened
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1 teaspoon vanilla extract
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16 regular sized peanut butter cups, frozen and unwrapped
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1/2 cup sweetened condensed milk
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1/2 cup mini Reese's Pieces