Brownies

1/2 cup butter
1 cup sugar
1 tsp vanilla
2 eggs
2 1-ounce squares unsweetened chocolate
1/2 cup flour

Mix the butter, sugar and vanilla; beat in eggs. 
Blend in the (melted) chocolate. Stir in flour and 1/2 cup nuts (optional). 
Bake in a greased 8x8x2-inch pan at 325 degrees for 30-35 minutes.