Toss 2 pounds asparagus with 1 tablespoon olive oil and a pinch each of salt and pepper in a 3-quart baking dish. Roast at 425˚ F until crisp-tender, 10 to 12 minutes. Mix 1/4 cup whole-wheat breadcrumbs, 2 tablespoons grated pecorino, 1 tablespoon chopped thyme and 1 tablespoon melted butter. Sprinkle over the asparagus. Broil until the breadcrumbs are golden, 2 to 4 minutes.