Ground cinnamon for garnish -(optional) Preheat oven to 350 degrees Cut each squash into lengthwise quarter; scoop out seeds and discard. Score yellow meaty part of each quarter with a knife. Brush bottom of a shallow baking pan with the vegetable oil. Place squash pieces in pan with remove skin from squash and put squash pulp into a bowl; beat until fluffy; add margarine and beat it in well. If desired, garnish with sprinkle of cinnamon. Food Exchange per serving: 1/2 FAT EXCHANGE + 1 STARCH EXCHANGE; Low-sodium diets: This recipe is excellent.