MUSHROOM RICE PILAF

½ cup onion, minced
½ cup celery, finely chopped
¼ cup butter
1 ½ cup uncooked regular long grain rice
6 ounces fresh mushrooms
1 tsp salt
½ tsp crumbled thyme
3 ½ cups chicken broth

Cook onion and celery in butter until tender; add rice and cook until golden. Add mushrooms, salt, and thyme. Stir in chicken broth. Bring to a boil; reduce heat and simmer, covered for 20 minutes. Serves 8.