Preheat the oven to 400°F (200°C). Line a baking sheet with parchment paper. In a bowl, toss diced butternut squash with olive oil, ground allspice, ground cinnamon, ground nutmeg, salt, and black pepper.
Spread the squash on the baking sheet in a single layer.
Roast for 30–35 minutes or until the edges are caramelized.
Garnish with fresh sage leaves before serving.
Image for illustrative purposes only. Final presentation may vary.
CHEF'S TIP
For extra depth, toss the squash with a touch of maple syrup and allspice before roasting to boost sweetness and spice.