Preheat your oven to 400°F. Peel, halve, and seed the squash, then cut into ½-inch cubes. Toss in olive oil, salt, and pepper until evenly coated.

Spread cubes in a single layer on a baking sheet. Roast at 400°F for 25–30 minutes, shaking the pan halfway for even browning, until edges are golden brown and tender.

Nestle fresh sage leaves among the squash during the last 5 minutes of roasting. They’ll turn dark green and crispy.

Transfer roasted squash and sage to a serving bowl. Sprinkle with flaky salt and serve immediately. Optionally drizzle with maple syrup or honey.