Preheat oven to 400 degrees F
Spread butternut squash, apples, and onion evenly on a parchment lined baking sheet. Drizzle with a generous pour of olive oil and add salt and pepper. Roast in the oven for 35 to 40 minutes.
Purée in a food processor or blender and top with pepitas and a sprinkle of ground turmeric.