2 cups unsifted flour
3/4 cup firmly packed light brown sugar
1 egg, beaten
3/4 cup cold margarine or butter
3/4 cup walnuts, chopped
24 caramels, unwrapped
1 can sweetened condensed milk

Preheat oven to 350 degrees F.

Combine flour, sugar and egg; cut in 1/2 cup margarine until crumbly. Stir in walnuts. Reserving 2 cups crumb mixture, press remainder firmly on bottom of greased 13 x 9-inch baking pan. Bake for 15 minutes.

Meanwhile, in heavy saucepan, over low heat, melt caramels with sweetened condensed milk and remaining 1/4 cup margarine. Pour over prepared crust. Top with reserved crumb mixture. Bake 20 minutes or until bubbly. Cool. Cut into bars.

Store loosely covered at room temperature.