INGREDIENTS
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1 stick (4 ounces) unsalted butter, plus more for greasing
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1/4 C sugar, plus more for coating
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4 ounces bittersweet chocolate, chopped
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2 large eggs plus 2 large yolks, at room temperature
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1 Tbsp flour
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3 Tbsp heavy cream
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2/3 C marshmallow cream
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1 graham cracker sheet (2 squares), finely chopped