Chocolate Chip Oatmeal Bar Cookies

As promised. These are the best, easiest cookies to make, and people rave about them. Look at the ingredients. What's not to love? This is also a good one for children to help with. And the raw dough is amazing (if you are into that kind of thing). I adapted this from a couple of other recipes.

Chocolate Chip Oatmeal Bar Cookies
(I make mine w/organic ingredients)

2 sticks butter
1 cup brown sugar
1 egg yolk
1 tsp vanilla extract
2 cups flour (I used half whole wheat pastry, half regular white)
1 cup oats
1 cup dark chocolate chips

Heat oven to 350. Grease 9 x 13 cake pan. Blend butter and sugar together, add egg yolk and vanilla and mix thoroughly. Add in flour one cup at a time; mix in oats and chocolate chips. Pat batter into cake pan, covering entire bottom of pan with even layer of dough. Bake at 350 for 25 minutes. Allow to cool for at least 15 min before cutting into small squares. Makes a lot of very rich cookies.