
Preheat the oven to 375 ℉ and line a 12-muffin tray with cupcake liners.
In a bowl, stir Goethe the flour, cinnamon, baking powder, baking soda, and salt. Set aside.
In another bowl whisk together the bananas, sugar, egg, vanilla and melted butter. Set aside.
In another bowl, make the topping by combining the brown sugar, flour, butter, oats and pecans. Set aside.
Pour the dry mixture into the bowl with the eggs and bananas/wet mixture. Stir until well blended and then pour the batter into the 12 muffin tins. Top the muffins evenly with the pecan topping and then bake for 18-20 minutes. Remove from oven and cool before serving.