Preheat the oven to 300 degrees F.
Place all of the ingredients into a blender carafe, cover and pulse until coarse crumbs form, about 2 minutes. Spread the crumbs evenly on 2 half sheet pans and bake until the crumbs just begin to brown and are crisp, about 5 minutes. Cool the crumbs on the pans for 15 to 20 minutes, and then transfer to an airtight container and store at room temperature for up to 2 weeks.
Recipe courtesy of Alton Brown, 2011