1 regular size chocolate cake mix
1 stick softened butter
2 tbsp. warm water
1 (7 oz.) jar marshmallow fluff
1/2 c. chopped walnuts
1/2 of 12 oz. pkg. milk chocolate chips

Mix cake mix, warm water and butter thoroughly. Press into 9"x13" pan. Mix marshmallow with water until "frosting" consistency. Spread on chocolate mixture within 1" of edges of pan. Put nuts and chocolate chips on top. Bake at 350 degrees for 20 to 25 minutes.