Step 1

Preheat oven to 350°F. Line 13x9-inch baking pan with foil, with ends of foil extending over sides of pan. Grease foil. Microwave unsweetened chocolate and 3/4 cup of the butter in large microwaveable bowl on HIGH 2 min. or until butter is melted. Stir until chocolate is completely melted. Stir in sugar. Blend in eggs. Add flour; mix well. Spread into prepared pan.

Step 2

Bake 30 to 35 min. or until toothpick inserted in center comes out with fudgy crumbs. (Do not overbake.) Cool in pan.

Step 3

Stir peppermint extract into frosting; spread evenly over cooled brownies. Microwave semi-sweet chocolate, remaining 1/4 cup butter and the water in medium microwaveable bowl on HIGH 1-1/2 min. or until butter is melted. Stir until chocolate is completely melted. Cool to room temperature. Spread evenly over frosting; cover. Refrigerate at least 1 hour before serving. Lift out of pan onto cutting board, using foil handles. Cut into 36 squares.