Preheat oven to 375 deg. Sift together flour, baking soda and salt onto waxed paper. Beat butter, brown sugar, sugar, and egg in large bowl with electric mixere until fluffy, about 3 minutes. Beat in hot water and vanilla. Gradually beat in flour mixture until blended and smooth. Stir in chocolate chips.
Drop dough by well-rounded measuring teaspoonfuls onto large greased baking sheet. Bake in preheated 375 deg oven for 10 minutes or until golden. Cool on sheet on wire rack 1 minute. Remove to wire rack to cool completely.