Preheat oven to 350°F. Beat the butter and both sugars in a large mixing bowl until light and fluffy. Add egg an vanilla extract and mix well.

Mix the flour, salt, and baking soda in another bowl. Add the dry ingredients to the batter and mix until well blended. Stir in the chocolate chips.

Drop the dough by small scoops 2 to 3 inches apart on an un greased cookie sheet. Flatten each scoop with the back of a spoon to about 3 inches in diameter.

Bake until the centers are still slightly soft to the touch, 11 to 14 minutes. Let cool on the cookie sheet for 5 minutes, then transfer to cool completely.