Preheat oven to 400F / 200C degrees. Line a rimed baking sheet with parchment paper.
Drizzle each half with 1 teaspoon of maple syrup, then sprinkle with ¼ teaspoon of cinnamon.
Bake for 16-17 minutes or until golden and juicy. Serve warm.
Other sweeteners you can use:
You can serve it with yogurt or whipped cream.
Baked Grapefruit with Maple Syrup and Cinnamon https://www.notenoughcinnamon.com/maple-syrup-cinnamon-baked-grapefruit/