Camouflage Chocolate Fudge Brownies

Place a rack in middle of oven; preheat to 325°. Lightly coat a 9x9" baking pan, preferably metal, with nonstick cooking oil spray or room-temperature unsalted butter. Line with parchment paper, leaving a handle on all sides. (If you have a precut sheet of parchment, simply slice it in half crosswise, then overlap the halves to line the pan.) Lightly coat parchment with nonstick spray.