Oatmeal Chocolate Chip Cookies

1/3 cup butter
1/3 cup brown sugar
1/4 cup white sugar
1 egg
1 tsp. vanilla extract
1 cup white whole wheat flour
1 tsp. baking soda
3/4 tsp. salt
1 tsp. cinnamon
3/4 cup quick or instant oats
3/4 cup dark chocolate chips (such as Ghirardelli chocolate chips, I rarely use them though, I like plain oatmeal cookies better!)

Preheat oven to 350 degrees. Beat butter and sugars with an electric mixer. Beat in egg and vanilla. In a medium mixing bowl, stir together flour, baking soda, salt and cinnamon. Stir flour mixture into sugar mixture until well combined. Stir in oats, then chocolate chips if using. Roll dough into walnut-sized balls and place 2 inches apart on ungreased cookie sheets. Bake 10-12 minutes.