Preheat oven to 400 degrees F (200 degrees C). Lightly grease a baking sheet with olive oil.
Place squash, cut-side down, on baking sheet.
Combine apple, celery, water, onion, and butter in a small baking dish; cover with aluminum foil.
Bake squash and apple mixture in the preheated oven until squash and apple are tender, about 45 minutes. Fill squash halves with apple mixture; drizzle with maple syrup and sprinkle with cinnamon.
Nutritional Facts
Per 2 servings
Calories: 244
Carbohydrate: 39g
Fat: 11g
Fiber: 6g
Protein: 2g
Sugar: 15g
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