Cinnamon Banana Muffins

0 Preheat your oven to 350 F
1 In a large bowl, mash the banana until smooth. Whisk in the eggs, maple syrup, oil, vanilla and cinnamon.
2 Fold in the spelt flour, baking powder and salt and mix well until evenly incorporated to form the batter.
3 Line a 12-count muffin tin with baking cups and fill each cup 3/4 of the way with the batter 
4 Combine the brown sugar and cinnamon together in a bowl. Sprinkle some of the sugar mixture over each muffin before baking. 
5 Bake the muffins for 20-25 minutes, until the tops are firm to touch and a toothpick comes out clean.
6 Keep stored in cool place for up to 3 days, or refrigerate for up to 1 week.