Divide chocolate and apricots among bottom halves of baguette, and sprinkle with salt. Sandwich with top halves.
Heat a grill pan over medium-high heat. Wrap the underside of a heavy skillet with foil. Place 2 sandwiches, top sides down, in grill pan. Top with skillet, and cook for 2 minutes. Flip, top with skillet, and cook until the chocolate has melted, about 1 minute. Repeat with remaining sandwiches. Serve immediately.