4 squares unsweetened chocolate
3/4 cup (1-1/2 sticks) margarine
2 cups sugar
3 eggs
1 teaspoon vanilla
1 cup all-purpose flour
1 cup coarsely chopped nuts (optional)
1 bag chocolate chips (optional)

Microwave chocolate and margarine in large bowl at high for 2 minutes or until margarine is melted. Stir until chocolate is completely melted. Stir sugar into melted chocolate until well blended. Stir in eggs and vanilla until completely mixed. Mix in four until well blended. Stir in nuts and/or chocolate chips. Spread in greased 13 x 9 inch pan. Bake at 350 for 35-40 minutes or until wooden pick inserted in center comes out almost clean. DO NOT OVERBAKE. Cool in pan; cut into squares. Makes 24 brownies.