Caramelized Butternut Squash

2 medium butternut squash (4 to 5 pounds total)
6-8 tablespoons unsalted butter, melted and cooled
1/4 cup light brown sugar, packed
1 1/2 teaspoons kosher salt
1/2-1 teaspoon fresh ground black pepper

Preheat the oven to 400°F. Cut off the ends of each butternut squash and discard.
Peel the squash and cut in half lengthwise. Using a spoon, remove the seeds.
Cut the squash into 1 1/4" to 1 1/2" cubes (large and uniform is best), and place them on a baking sheet. Add the melted butter, brown sugar, salt and pepper.
With clean hands, toss all of the ingredients together and spread out in a single layer on the baking sheet. Roast for 45 minutes to 55 minutes, until the squash is tender and the glaze begins to caramelize. Turn the squash while roasting a few times with a spatula to be sure it browns evenly. Adjust seasonings if needed.