Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      cup           margarine -- softened
   1      whole         egg
   1      teaspoon      pure vanilla extract
   2 1/2  cups          unbleached flour
   1 1/4  cups          granulated sugar
   1 1/2  teaspoons     baking powder
   6      drops         red food coloring
     1/2  teaspoon      rum extract
   1      ounce         unsweetened chocolate squares -- melted
   6      drops         green food coloring
     1/4  cup           walnuts -- chopped

Preparation:

Line a 9 x 5" loaf pan with wax paper; set aside. In a mixing bowl, combine margarine, sugar, egg, and vanilla. In another mixing bowl, combine flour, sugar, and baking powder. Mix wet ingredients with dry ingredients just until soft dough forms. Divide dough into thirds. Stir red food coloring and rum extract in one third. Press into bottom of prepared pan. Stir melted chocolate into second third. Press chocolate layer evenly over red mixture. Stir green food coloring and walnuts into remaining third. Press green mixture evenly over chocolate layer. Cover with plastic wrap and refrigerate overnight. Preheat oven to 375. Remove dough from pan. Discard wax paper. Slice dough in half lengthwise. Cut halves crosswise into 1/8" slices. Place slices 2" apart on unprepared baking sheets. Bake for 12 minutes or until set.