Preheat oven to 375ºF. Grease cookie sheets.
In a small bowl combine flour, salt, baking soda and cinnamon.
In a large bowl beat Light brown sugar, butter, and sugar together, with an electric mixer on medium speed, until light and fluffy. Add egg, water and 2 teaspoons vanilla; beat well. Add flour mixture; beat at low speed just until blended. Stir in oats with spoon. Stir in raisins. Drop dough by tablespoons, 2” apart, onto prepared cookie sheets. Bake 10-12 minutes or until edges are golden brown. Let cookies stand 2 minutes on cookie sheets before removing to wire racks to finish cooling.
For Glaze: Stir powdered sugar, 1 tablespoon milk and 1 teaspoon vanilla in a small bowl until smooth. Drizzle over cookies with a fork.
Store cookies in a airtight container.