2 c. Bisquick
1 egg
1 can Eagle Brand condensed milk
1/4 cube butter
1 c. chocolate chips
1 c. walnuts, chopped

Stir all ingredients until well blended. Pour into lightly greased 13 x 9 x 2 inch pan. Bake in 350 degree oven for 20 minutes. Let cool. Cut into 3 x 3 inch slices. Sprinkle with powdered sugar.