1 cup plus 2 tablespoons butter or margarine, softened, divided
2 cups packed brown sugar
4 teaspoons vanilla extract, divided
3 cups quick-cooking oats
2 1/2 cups all-purpose flour
1 1/2 teaspoons salt, divided
1 teaspoon baking soda
1 can (14 ounces) milk
2 cups (12 ounces) chocolate
1 cup chopped walnuts
In a mixing bowl, cream 1 cup butter and brown sugar. Beat in eggs and 2 teaspoons vanilla. Combine the oats, flour, 1 teaspoon salt and baking soda; stir into creamed mixture.
Press two-thirds of oat mixture into a greased 15 by 10 by 1-inch baking pan.
In a saucepan, combine milk, chocolate chips and remaining butter and salt. Cook and stir over low heat until chocolate is melted. Remove from the heat; stir in walnuts and remaining vanilla.
Spread over crust. Sprinkle with remaining oat mixture. Bake at 350 degrees F for 25 minutes or until golden brown. Cool. Cut into squares.