INGREDIENTS
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One 17.5-ounce package sugar cookie mix
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2 tablespoons unsweetened cocoa powder, plus more for dusting
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1/2 cup (8 tablespoons) butter, softened
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1 large egg
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Chocolate Peanut Butter Filling, recipe follows
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Sliced bananas, optional
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5 ounces semisweet chocolate, chopped
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1/2 cup creamy peanut butter
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1/4 cup heavy whipping cream