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Ingredients
4 slices challah or white bread
2 ounces semi-sweet chocolate, chopped
Directions
Form 2 sandwiches with the bread and chocolate.
Transfer to a hot panini press or waffle iron and cook until the bread is golden and the chocolate has melted, 2 to 3 minutes (alternatively, cook the sandwiches in a hot grill pan, turning once and pressing down frequently).
Source: http://www.realsimple.com/food-recipes/browse-all-recipes/chocolate-panini-00000000008035/index.html