Chocolate Lover's Favorite Mint Brownies (from Dakin Stovall)

Brownies:
2 cups sugar
1 cup butter, softened
4 eggs
4 (1 ounce) squares unsweetened chocolate, melted and slightly cooled
2 1/2 cups flour
1/4 teaspoon salt
1/4 teaspoon baking powder
2 teaspoons vanilla
1 cup broken walnuts or pecans (optional)

Mint frosting:
4 tablespoons butter, softened
2 tablespoons evaporated milk
2 cups powerdered sugar
1/2 teaspoon peppermint extract
Few drops of food coloring

Glaze topping:
6 tablespoons butter
1 cup semi-sweet chocolate chips
2 teaspoons vanilla

In a large bowl, cream together the sugar and butter for the brownie until fluffy. Beat in eggs until well blended; then add melted chocolate. Mix dry ingredients and add to creamed mixture along with vanilla and nuts. Spread in a greased 9x13 pan and bake at 325 degrees for 30 to 35 minutes, or until no imprint is left when touched. Do not overbake.

Mix mint frosting ingredients until creamy and spread on brownies. Refrigerate for 1 hour.

For glaze, combine butter and chocolate chips in a double boiler; add vanilla and blend thoroughly. Pour gently over the frosting and spread by tipping the pan before the glaze cools; refrigerate.