Preheat oven to 350*
In large mixing bowl, beat butter and sugars til smooth
Mix in eggs and vanilla; beat well
Add in flour, baking soda, cinnamon, and salt to batter and mix well
Add in oats, mix til combined. Then add in chocolate chips.
Drop batter by heaping tablespoons onto ungreased cookie sheets
Bake cookies 8-10 minutes or until lightly browned. Cool 1 minute on cookie sheet, then remove to cooling rack. After cooled completely, store in tightly covered container. ENJOY!
NOTE: For bar cookies, spread batter in an ungreased 13x9 pan and bake for 30-35 minutes
FOR HIGH ALTITUDE: increase flour to 1 3/4 cups