PREHEAT oven to 350° F. Line 9-inch-round cake pan with wax paper; grease paper.
COMBINE 3/4 cup sugar, butter and water in small, heavy-duty saucepan. Bring to a boil, stirring constantly; remove from heat. Add 3/4 cup morsels; stir until smooth. Stir in vanilla extract. Add eggs, one at a time, stirring well after each addition. Add flour, baking soda and salt; stir until well blended. Stir in remaining morsels. Pour into prepared cake pan.
BAKE for 20 to 25 minutes or until wooden pick inserted in center comes out slightly sticky. Cool in pan for 15 minutes. Invert onto wire rack; remove wax paper. Turn right side up; cool completely.
BEAT cream and remaining sugar in small mixer bowl until stiff peaks form.
SPREAD filling over brownie; top with berries. Refrigerate until ready to serve.