Preheat oven to 375°F. Line cookie sheets with parchment paper.
In small bowl, combine flour, 1/2 teaspoon cinnamon and salt. In large bowl, beat butter, 3/4 cup sugar and vanilla until light and fluffy. Add flour mixture; mix only until combined. Drop by tablespoonfuls onto prepared cookie sheets, placing 2 inches apart.
Bake 8-10 minutes or until bottoms are golden brown. Remove to cooling grid; cool 5 minutes. Combine remaining 3/4 cup sugar with remaining 1/2 teaspoon cinnamon. Roll warm cookies in sugar mixture; cool completely.