Heat oven to 350°F. Grease ... blended. Stir in walnuts, if desired. Spread in ... or just until brownies begin to pull away from ... until smooth and spreadable.
Spray a 9 X 13-inch ... saucepan. Heat until boiling. Boil 30 seconds. Remove from heat. Add chocolate pieces; stir until melted. Spread over brownies.