Preheat the oven to Gas Mark 5, 180°C, fan 170°C.
Divide the vegetables between two large baking trays (keeping the beetroot away from the other veg to prevent it from staining), then toss with the olive oil, before arranging in a single layer. Season well.
Roast in the oven for 30 minutes, or until golden at the edges. Remove from the oven and toss with the maple syrup, then return to the oven for a further 5 minutes.
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