Preheat oven to 350°F

Heat Butter in 3-quart saucepan over medium-high heat.

Add onion and celery. Cook until vegetables are tender-crisp.

Add broth and heat to a boil.

Remove saucepan from heat. Add stuffing, sage and oysters. Mix lightly.

Spoon stuffing mixture into greased 2-quart casserole dish.

Cover and bake 30 minutes or until hot.

To make ahead: Cover unbaked stuffing mixture in casserole dish and refrigerate up to 1 day. Bake 40 minutes or until hot. For more crisp stuffing, bake uncovered.