Maple-Mustard Roasted Chicken with Squash and Brussels Sprouts | We give the large bone-in breasts a head start in the oven so they will be perfectly cooked by the time the vegetables are done. This cut is also rather juicy; you’ll want to drain off the liquid from the pan before adding the vegetables so they can caramelize evenly. Brussels sprouts, butternut squash, and acorn squash are at their absolute best when roasted. The trick is to cut them into even pieces with a maximum surface area