1. Preheat the oven to 220˚C/200˚C fan/gas mark 7.
  2. Dice 1 large sweet potato and place on one half of a baking tray. Chop 1 medium head of broccoli into florets and place on the opposite side of the tray. Peel 1 red onion, chop into chunks and scatter through the broccoli.
  3. Drizzle everything with olive oil, season with salt and pepper and toss to coat.
  4. Bake for 20-25 minutes or until just tender, stirring halfway through. Serve immediately, or allow to cool and separate if you are meal prepping.