Preheat the oven to 180°C/350°F/gas mark 4.
Mash the bananas into a rough paste in a bowl and stir in the maple syrup.
Add the oats, cinnamon and pecans and stir again, then use your hands to fully combine.
Press tightly into a small, shallow baking tin and smooth the top with the back of a spoon.
Bake in the oven for 15 minutes. Remove from the oven and slice into bars while still warm, before turning out onto a wire rack to cool completely.
Switch the pecans for sultanas (golden raisins), freeze- dried raspberries or dried cranberries for tasty variations (which children will love too).

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