"Soft and chewy chocolate cookies with melted marshmallow and a surprise chocolate center. They really do taste like a cup of hot cocoa!..."
INGREDIENTS
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1 stick (1/2 cup) unsalted butter
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1 (12 oz.) bag semisweet chocolate chips
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1 1/2 cups all-purpose flour
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1/4 cup unsweetened cocoa powder
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1 1/2 teaspoons baking powder
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1/4 teaspoon salt
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1 1/4 cups (packed) light brown sugar
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3 large eggs
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1 1/2 teaspoons pure vanilla extract
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16 large marshmallows
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8 ounces semi-sweet baking chocolate, cut in 1-inch pieces