Heat oven to 350 degrees. Make up a package of fudge brownie mix following directions for either cake like or fudge brownies or use your own favorite recipe. Bake as package or recipe directs. Cool brownies, do not cut.

Creme De Menthe Layer: Beat 1/2 cup room temperature butter, 2 cups confectioners' sugar and 3 tablespoons green creme de menthe in a large bowl with electric mixer until smooth. Spread over brownies.

Chocolate Glaze: Stir in 1 cup semi-sweet chocolate chips and 6 tablespoons butter in a saucepan over low heat until melted and smooth. Cool; pour over creme de menthe layer and spread evenly. Before glaze sets, sprinkle with coarsely chopped mint wafers.