1 1/2 C Sifted All Purpose Flour
1 tsp baking soda
1 tsp Ground Cinnamon
1 C (2 sticks) butter, softened
1/2 C firmly packed light brown sugar
1 cup granulated Sugar
1 Large Egg
1 tsp Vanilla Extract
1 1/2 C Old Fashioned Rolled Oat
1 C Semisweet Chocolate Chips

1.  Mix together flour , baking soda and cinnamon

2.  Beat together butter, brown sugar and granulated sugar at medium speed until light and fluffy.  Beat in egg and vanilla.

3.  At low speed, beat in flour mixture until blended.  Fold in oats and chocolate chips.  Cover with plastic wrap and chill for 1 hour

4.  Preheat oven 350 degrees.  Grease 2 baking sheets

5.  Shape dough into 1 inch balls.  Place cookies 2 inches apart on prepared baking sheets.  Flatten each cookie slightly.

6.  Bake cookies until lightly browned around edges, 10 to 12 min.  Transfer baking sheets to wire racks to cool slightly.  Transfer cookies to racks to cool completely.

Baking tip. 

Make dough ahead of time and freeze it.  Later, use defrosted dough to make homemade cookies in minutes.