Heat the olive oil in a large skillet over medium heat. Add the onions and sugar and cook, stirring occasionally, until the onions are caramelized and golden brown, about 10 minutes.
Season the onions with salt and pepper, to taste, and set aside.
To assemble the sandwiches, layer the baguette slices with the caramelized onions, figs, arugula, and goat cheese.
Serve immediately.
Interesting Facts
Baguettes were first invented in France in the 19th century.
Figs are a good source of dietary fiber, calcium, iron, and antioxidants.
Goat cheese is lower in fat and calories than cow's milk cheese.