1Heat oven to 350ºF. Spray square baking dish, 8x8x2 inches, with cooking spray.
2Mix all ingredients; let stand 15 minutes. Spread mixture in baking dish.
3Place baking dish in rectangular pan, 13x9x2 inches, on oven rack. Pour boiling water into pan until 1 inch deep. Bake 25 to 30 minutes or until golden brown.