Cookie Base- cream butter and sugar well. Add eggs and vanilla. Sift flour, soda and salt together. Add oatmeal, then add dry ingredients to creamed mixture. Set aside.
Filling- Melt chocolate chips, milk, butter and salt in top of double boiler. When smooth add nuts and vanilla. Spread 2/3 of oatmeal mix in greased 9x13 inch pan. Cover with chocolate mixture. Dot with remaining oatmeal mix. Bake 25-30 or til set at 350 degrees.