1 c. chocolate mint chips
1/4 c. butter
1/4 c. icing sugar
1 egg
1 1/2 c. graham wafer crumbs
1/2 c. chopped walnuts, optional
1/4 c. butter
2 c. icing sugar
2 tbsp. milk
green food coloring, optional

Melt chips and 1/4 cup butter over hot water. Reserve 1/4 cup for top drizzles. Add 1/4 cup icing sugar and egg to remaining melted chips and beat well. Stir in wafer crumbs and nuts. Press evenly on bottom of 8 inch square pan. Chill.

Cream 1/4 cup butter, 2 cups icing sugar and milk until fluffy. Add green food coloring if desired. Spread evenly over base in pan. Drizzle reserved melted chips over the top. Chill until firm. Cut into bars. Makes 3 dozen.