Caramel Apple Walnut Squares Recipe

Preheat oven to 375°. In large bowl, combine flour, oats, sugar, baking soda and salt; cut in margarine until crumbly. Set aside 1 1/2 cups of crumb mixture, then press remainder on bottom of 13 x 9" baking pan. Bake for 15 minutes. Add walnuts to reserved crumb mixture. In heavy saucepan, over low heat, melt caramels with sweetened condensed milk, stirring until smooth. Spoon apple filling over prepared crust; top with caramel mixture then reserved crumb mixture. Bake 20 minutes or until set; cool. Serve warm with ice cream.