"You can skip the campfire and still serve up s'mores flavors to a crowd with this rich, chewy version of the famous St. Louis cake...."
INGREDIENTS
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Nonstick cooking spray, for the pan
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One 15.25-ounce box devil's food cake mix
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1 teaspoon vanilla extract
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2 large eggs
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1 stick (8 tablespoons) unsalted butter, melted and cooled
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One 8-ounce package cream cheese, at room temperature
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1 teaspoon vanilla extract
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2 large eggs
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4 tablespoons unsalted butter, melted and cooled
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3 cups confectioners' sugar
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One 10-ounce bag standard marshmallows (not mini)
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4 graham cracker sheets