Preheat oven to 350F.
Place brie on a small baking sheet. Bake about 15 minutes or until softened. Remove and let cool for about 5 minutes.
While the brie cools, heat maple syrup, brown sugar, and cinnamon over low heat in a small saucepan. Stir until the sugar has dissolved; stir in pecans.
Pour over the brie and serve immediately.
