Heat oven to 375°F.
In large bowl, beat brown sugar, shortening and granulated sugar on medium speed of electric mixer until creamy.
Add egg, water and vanilla; beat well.
Add combined oats, flour, salt and baking soda; mix well.
Drop dough by rounded teaspoonfuls onto ungreased cookie sheets.
Bake 9 to 11 minutes or until edges are golden brown. Remove to wire rack. Cool completely.
Store tightly covered