1/2  cup Butter, unsalted
1 c Sugar
1/2 tsp. vanilla extract
1/2 tsp.  Mint extract
 1/2 cup  Flour, unbleached
1/4 tsp.  Salt
1/2 tsp. Baking powder, -double-acting
2 oz . Chocolate, unsweetened Non-paralleils, -multi-colored
2 tsp.  Water
 Beat butter until soft; gradually add sugar and blend until creamy.
Mix in beaten egg and extracts.  DON'T USE A FOOD PROCESSOR!!!
Stir salt and baking powder into flour; stir into butter/sugar mixture.
Melt chocolate in water over a double-boiler; add to dough.
Form into a long roll approximately 2" - 3" wide.  Wrap dough with plastic wrap and chill overnight.
Slice dough 1/4" thick and place on greased cookie sheet.  Sprinkle with non-paralleils and press in slightly with back of spoon.  Bake in 400 degree oven for 8 - 10 minutes.  Cool cookies on rack.
NOTES:
*  Can substitute 3 oz. semi-sweet chips for the chocolate.