Add a tablespoon of olive oil to the pan and add the butternut squash. Sauté for 5 minutes, stirring frequently, until tender. Season with salt and pepper. Add the brussels and sauté for another 4-5 minutes.
In the meantime, stir together the butter, honey, and cinnamon in a small bowl. Add to brussels/butternut mixture and stir to combine. Season with additional salt and pepper to taste. Serve immediately!