"Chocolate cake-like batter is baked into large, soft hamburger-sized, bun shaped cookies then filled with a fluffy, sweet marshmallow frosting - an updated classic! ..."
INGREDIENTS
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2 cups unbleached all-purpose flour
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1/2 cup Dutch-processed cocoa powder
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1 teaspoon baking soda
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1/2 teaspoon salt
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1 cup light brown sugar, packed
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8 tablespoons unsalted butter, room temperature
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1 large egg, room temperature
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1 teaspoon vanilla
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1 cup buttermilk
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1/4 teaspoon instant espresso powder/granules
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8 tablespoons unsalted butter, room temperature
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1 cup powdered sugar
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1 1/2 teaspoons pure vanilla extract
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dash salt
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2 (scant) cups Marshmallow Fluff