Ingredients: 2 1/2 cups puffed rice cereal 1/4 cup (1/2 stick) unsalted butter, cut into cubes 1/4 cup heavy cream 1/2 cup nutella 12 ounces (2 cups) semisweet chocolate chips or chopped semisweet chocolate 2 cups mini marshmallows 1/2 cup mini or regular white chocolate chips Directions: Line an 8-by-8-inch square baking pan with lightly