Heat a large cast iron pan over medium heat, add 2 tablespoons of the butter and allow to melt. Add slices of baguette and sauté, moving pan occasionally until golden brown on both sides, about 2 minutes.
Remove from the pan and add to a large platter. Repeat with the remaining butter and bread until all the bread has been used.
Spread about a tablespoon of ricotta on each crostini and top with figs. Drizzle with balsamic glaze.