Crispy baked banana chips

1. Heat the oven to 100°C (210°F) and line two trays with baking paper.
2. Slice the bananas 3 mm thick and brush with lemon juice.
3. Lay out in a single layer, dust with cinnamon and bake for 1½–2 hours, turning once, until dry.
4. Cool on the trays: they crisp up as they cool.

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