Combine first 7 ingredients in a large bowl; stir until well combined. Weigh or lightly spoon flour into a dry measuring cup; level with a knife. Add flour, oats, nuts, and chocolate chips to sugar mixture; stir until just combined.
Scrape the dough into a 9-inch glass pie plate coated with cooking spray, and spread to edges using a spatula. Bake at 350° for 13 minutes or until set. Cool slightly on a wire rack. Cut into 8 wedges.
This recipe is really good and makes a great base for personal changes. I substituted 3T ground flax and 1T water for the butter the first time I made it. Tasted good, but lacked something. Second time, I added 1/4t cinnamon and an extra 1/8t vanilla. The only thing I need now is someone to keep me from eating the entire recipe in one sitting! I plan to try it with mini chocolate chips or dried cranberries next time. Additionally, I made this with sliced almonds both times, as that is what I had on hand. Very tasty.
Really tasty and easy! I didn't weigh out the flour and just measured 1/2 cup but I think that it needed more. It was really gooey and wet going into the pan. I ended up having to cook it like 10-12 min more than the recipe called for. It turned out really tasty though a bit crispy which I actually really like. Next time (maybe tonight ;) I make it it I will measure out the flour to see if that makes a difference.