Steak with Chipotle Butter and Roasted Zucchini

Name: Steak with Chipotle Butter and Roasted Zucchini
Ingredients: 1 large sweet onion, cut into 1/2-inch wedges; 2 zucchini (about 1 1/2 pounds), sliced on an angle into 1/2-inch-thick half-moons; 2 tablespoons extra-virgin olive oil; Kosher salt and freshly ground pepper; 2 tablespoons unsalted butter, at room temperature; 1 chipotle chile pepper in adobo sauce, minced, plus 1 teaspoon sauce from the can; 3 thin beef chuck steaks (about 1 1/2 pounds; 1/2 to 3/4 inch thick); 1 1/2 teaspoons adobo seasoning; 1 ounce queso blanco cheese, crumbled (about 1/4 cup); Fresh cilantro, for topping; Lime wedges, for serving