In a kettle, saute the first five ingredients in the butter substitute until tender. Add remaining ingredients and mix well. Spoon into a greased 13 x 23 cm baking dish. Cover and bake at 180ÂșC . for 75 minutes. Uncover and bake for 15 minutes longer or until heated through.
This dish may be assembled and refrigerated overnight. Remove from the refrigerator 1 hour before baking.