Grasshopper Pie is a wonderful variety of sweet pie, which as its names implies has a pleasant minty green color. Made well on an oreo cookie crust, the grasshopper pie uses a filling which is a fine mix of melted butter, hot milk, marshmallows, crÃ¨me de menthe liqueur, crÃ¨me de cacao, whipped cream and some food color. A drop or two of green food dye is what that lends the grasshopper pie its minty green color. Also the liqueur addition gives the pie a flavor that complements the minty feel. A made-ahead variety of dessert pie, grasshopper pie has to be chilled for several hours, preferably overnight, before serving. Also, any leftovers call for quick refrigeration without fail.