To make your own seasoned bread crumbs, remove crust from half a loaf of sourdough; cut into 1-inch cubes and toast in a 250°F oven until dry but not browned, about 1 hour. Pulse cooled bread in a food processor until crumbs form; scrape into a bowl and toss with ½ cup grated Parmesan, 1½ tsp garlic powder, ¾ tsp kosher salt and ¼ tsp freshly ground pepper. Makes about 2 cups.