It's not just for salads or crudités, here celery stars in an easy side dish. It's braised with tomatoes, garlic, and anchovies and the briny result goes well with a main like pork chops or roasted fish.
Preheat oven to 350°F. Heat oil in a straight-sided skillet over medium. Add thinly sliced onion and anchovies. Cook, stirring occasionally, 5 to 6 minutes. Add garlic and cook 1 minute. Stir in celery, tomatoes, chicken broth, and bay leaves.
Bring to a boil, then cover and transfer to oven. Cook, stirring once, 30 minutes. Stir in olives; return to oven and cook, uncovered, 10 to 15 minutes more. Serve.