"Camilla Saulsbury..."
INGREDIENTS
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1 (19 7/8 ounce) package brownie mix
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1/2 cup vegetable oil
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1/4 cup water
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4 large eggs
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1/3 cup packed brown sugar
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1/3 cup creamy peanut butter
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6 tablespoons creamy peanut butter (not natural or old-fashioned style)
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1/4 cup unsalted butter, softened
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2 cups powdered sugar, sifted
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3 -4 tablespoons milk