4 sq. unsweetened chocolate
3/4 c. butter
2 c. sugar
3 eggs
1 tsp. vanilla
1 c. flour
1 c. chopped nuts (optional)

Heat oven to 350 degrees. Melt chocolate and butter in microwave on HIGH 2 minutes or until butter is melted. Stir until chocolate is completely melted. Stir sugar into chocolate. Mix in eggs and vanilla until well blended. Stir in flour and nuts.

Spread in greased 13x9-inch pan. Bake 30-35 minutes or until toothpick inserted in center comes out with fudgy crumbs. Cool in pan; cut into squares.