Preheat oven to 350°
In a food processor or chopper grind oats until they are smaller and powdery. Set aside and add when adding flour.
In a large bowl with a mixer cream butter with sugar and brown sugar.
Add the vanilla extract, maple extract, and eggs mix completely.
Add the oats, flour, baking soda, salt and cinnamon, mix on medium.
On low add in mini chocolate chips and walnuts.
Use a 3 tablespoon size scoop and place the balls of dough on a parchment lined cookies sheet. (6 scoops per sheet) the cookies will spread allow room so they don't touch.
Bake the cookies for 12-14 minutes or until the bottoms are golden brown and set.
Cool the cookies on the baking sheets.
The centers of the cookies will firm up as the cookies cool on the baking sheets.