INGREDIENTS
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2 cups creamy peanut butter ((475g))
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3/4 cup salted butter (softened to room temperature (225g))
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1/4 cup brown sugar (tightly packed (50g))
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1 teaspoon vanilla extract ((5ml))
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3 1/4 cups powdered sugar ((405g))
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4 ounces semisweet chocolate, broken into small pieces ((or 2/3 cup semisweet chocolate chips) (115g))
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1 teaspoon shortening