After Christmas is over, there are still two months of scarce daylight ahead. Here’s a suggestion for how to fill the gloomy hours: read.

Preheat oven to 400 degrees F. Place the squash halves, cut-side up, on a parchment-lined baking sheet. Drizzle the squash with avocado oil and season with salt and pepper, and roast for 30 to 45 ...