Preheat oven to 375 °F (191 °C) and have a 9x13-inch oven-safe casserole dish ready.
In a large bowl, place cubed bread in and set aside.
In a skillet over medium-high heat, add a little bit of olive oil or butter. Once heated up, add the sausage and break into pieces with a wooden spoon or spatula and cook until browned.
Add in the celery, onion, and garlic. Cook until tender, about 5 minutes.
Add the fresh herbs and dried figs. Toss to incorporate. Add the turkey stock then season with salt and pepper.
Remove from heat and pour mixture into bowl with bread. Toss to incorporate evenly.
Pour mixture into baking sheet and spread into an even layer. Sprinkle fried onion pieces on top, if using.
Bake, uncovered, for 15-20 minutes or until mixture is warmed through and the top is beginning to brown.
Once done, remove from oven, let sit for 10 minutes then serve (with more fried onion pieces on top, if desired).