How to Make It
Boil sliced squash and chopped onion in water to cover in a Dutch oven 30 minutes or until squash is tender; drain and lightly mash squash with a fork. Add beaten egg and remaining ingredients; stir until mixture is blended.
Spoon dressing into a lightly greased 1 1/2-quart baking dish.
Bake at 350° for 50 minutes or until set.