1 (18 1/4 ounce) package pillsbury fudge brownie mix |
1/2 cup vegetable oil |
1/4 cup water |
2 large eggs |
1/2 cup butter, softened or 1/2 cup margarine |
1 (3 ounce) package cream cheese, softened |
2 1/2 cups powdered sugar |
1 teaspoon mint extract |
green food coloring (optional) |
1 cup semi-sweet chocolate chips |
1/3 cup butter or 1/3 cup margarine |