Grasshopper Brownies Supreme

• 21 1/2 pkg pillsbury fudge brownie
• 1 egg
• 1 frosting
• 500 gr powdered sugar
• 190 gr margarine
• 170 gr semisweet chocolate chips
• 120 ml water
• 120 ml oil
• 65 gr creme de menthe syrup
• 85 ml pkg cream cheese softened