Preheat oven to 350°.
Combine first 5 ingredients in a bowl; stir well, and set aside.
Combine 3/4 cup chocolate morsels and oil in a small saucepan; cook over low heat until chocolate melts, stirring constantly. Pour the melted chocolate mixture into a large bowl, and let cool 5 minutes. Add brown sugar, corn syrup, water, vanilla extract, and egg whites to chocolate mixture; stir well. Stir in flour mixture and remaining chocolate morsels.
Drop dough by level tablespoons 2 inches apart onto baking sheets coated with cooking spray. Bake at 350° for 8 minutes. Let cool 2 minutes or until firm. Remove cookies from pans; let cool on wire racks.