Courtesy of Real Simple
4 slices of challah or white bread
2 ounces of semi sweet chocolate, chopped (I'm thinking Nutella would be amazing here too!)
Form 2 sandwiches with the bread and chocolate. Transfer to a hot panini press or waffle iron (or George Foreman grill!) and cook until bread is golden and the chocolate has melted, 2 to 3 minutes.
(You could cook these in a hot grill pan, turning once, and pressing down frequently.)