Mint Brownies

Brownie layer:
2/3 cup margarine
4 squares unsweetened chocolate
2 cups brown sugar
3 eggs
1 tsp. vanilla
1 1/4 cup flour
1 tsp. baking powder
1 tsp. salt

Mint layer:
2 1/2 cups powdered sugar
5 Tbs. margarine
2 1/2 Tbs. milk
1 tsp. peppermint extract

Chocolate topping layer:
2 1/2 squares unsweetened chocolate
2 1/2 Tbs. margarine

Brownies: Preheat oven to 350 °F. Melt margarine, chocolate and brown sugar together, and mix well.  Add in eggs, vanilla, flour, baking powder, and salt, and mix well. Spread in 9x13 greased pan.  Bake for 25 minutes.  Cool thoroughly.

Mint layer: Combine powdered sugar, margarine, milk and peppermint extract. Spread on cooled brownies.

Chocolate topping: Melt 2 1/2 squares unsweetened chocolate and margarine together over hot water. Spread on top of mint layer.