Heat oven to 350°F. Spray 11x7-inch (2-quart) glass baking dish with cooking spray. In 12-inch nonstick skillet, melt butter over medium-high heat. Cook onion and bell pepper in butter 2 to 3 minutes, stirring frequently, until tender. Stir in stuffing mix, corn, chiles and water. Spread stuffing mixture in baking dish.