
In saucepan, stirring constantly, bring ¾ cup firmly packed brown sugar and ¼ cup margarine to boil over medium heat; boil 2 min. Add 3 Tbsp milk, 1 ⅓ cups flaked coconut and ½ cup chopped walnuts. Stirring constantly, boil 1 min. Spread on top of cake. Broil 6” from heat 3 min or until golden brown. Cool.