Pre-heat oven to 375 degrees. Combine flour, soda, salt and cinnamon in a small bowl. Set aside. In the bowl of a mixer, cream the butter and sugars until fluffy. Add eggs one at a time. Add vanilla. Next, add in the flour mixture and mix until incorporated. Mix in the oats and chips. Drop by rounded spoonfuls onto a parchment lined baking sheet. I use a 1 TBSP cookie scoop and bake a dozen cookies on one sheet.