Preheat the oven to 350°F. Spread the nuts in a single layer on a baking sheet. Toast for 6-8 minutes until golden. Cool completely.
Spray a 13 x 9 inch metal non-stick baking pan with baking spray or butter.
In a medium size mixing bowl, use a whisk to sift together oats, flour, baking soda and salt.
Using an electric mixer, cream together butter, granulated sugar, brown sugar and vanilla.
Beat for 2 minutes until fluffy and combined. Add the eggs one at a time beating well after each addition.
Slowly add the dry ingredients to the creamed mixture. Stop and scrape the sides of the bowl as needed.
Mix entire package of milk chocolate chips and 1 cup chopped nuts into the dough by hand.
Spread into the prepared pan and sprinkle the top with the remaining 1/2 cup chocolate chips and chopped nuts.
Bake for 30-35 minutes until golden and a toothpick inserted into the center shows moist crumbs.
Cool completely then cut into bars.