Preheat the oven to 200C (fan oven 180C, gas mark 6).
Put all the vegetables into a roasting tin and add the olive oil, tossing to coat. Roast for 20 minutes, then turn the vegetables over, adding the cumin (if using). Roast for another 15 minutes, until tender.
While the vegetables are roasting, prepare the dips. Put the ingredients for the beetroot dip into a blender and blend for 15 to 20 seconds until smooth. For the cucumber dip, mix the cucumber and yoghurt together. Keep covered and chilled until ready to serve.
Preheat the oven to 200C (fan oven 180C, gas mark 6).
Put all the vegetables into a roasting tin and add the olive oil, tossing to coat. Roast for 20 minutes, then turn the vegetables over, adding the cumin (if using). Roast for another 15 minutes, until tender.
While the vegetables are roasting, prepare the dips. Put the ingredients for the beetroot dip into a blender and blend for 15 to 20 seconds until smooth. For the cucumber dip, mix the cucumber and yoghurt together. Keep covered and chilled until ready to serve.