Preheat oven to 375°F

In a small mixing bowl, combine flour, baking soda, and salt. Set aside.

In a large mixing bowl, beat margarine, brown sugar, sugar, and vanilla extract until creamy.

Beat an egg.

Beat in flour mixture gradually.

Stir in butterscotch morsels.

Use a tablespoon to drop dough onto ungreased cookie sheet.

Bake for eight minutes.

Remove from oven and let cool on the pan for two minutes.

Transfer cookies to wire cookie rack to finish cooling.