01 -
Heat the oven to 350°F and grease a 9-by-13-inch baking pan.
02 -
Whisk flour, baking soda, salt and cinnamon together.
03 -
In a separate bowl beat softened butter with brown and white sugars until evenly creamy and lighter.
04 -
Beat in eggs one at a time, scraping the bowl. Mix in vanilla.
05 -
Fold in the dry mixture only until flour streaks disappear.
06 -
Stir in oats and chocolate chips until distributed.
07 -
Press the thick dough evenly into the pan.
08 -
Bake about thirty to forty-five minutes, checking from thirty for lightly browned edges and a set center without wet batter. Cool in the pan before cutting into bars.