Pre-heat the oven to 200°C and line a large baking tray with parchment paper.
Cut the butternut squash into cubes, removing the seeds. Place the butternut squash cubes on the baking tray and drizzle with 3 tbsp olive oil, thyme, sea salt and pepper.
Toss until all squash cubes are coated, then roast for 35 minutes.
Remove from the oven and leave to cool slightly. Meanwhile cut the beetroots into quarters and cut the avocados into chunks.
Drain the chickpeas in a sieve and rinse under tap water.
Assemble the salad by mixing all ingredients – the roasted squash, beetroot, avocado, chickpeas and pumpkin seeds.
Toss to combine, then squeeze over the lemon juice and drizzle the remaining olive oil. Mix again and serve.