Heat oven to 325. Spray an 8"-square baking pan w/ cooking spray. In microwaveable bowl, place 1-1/3 cup chocolate morsels, sugar, butter and water. Microwave in 20 second intervals until melted and smooth.
Pour mix into lg bowl. Beat in eggs, one at a time until blended. Stir in vanilla. Beat in flour and salt. Stir in remaining chocolate morsels. Pour batter into pan.
Bake for 35-40 mins, or until a toothpick inserted into center comes out clean. Cool. Cut into bars.