Rowan Brownies

1 cup butter                             4 eggs
2 cups sugar                            3 teaspoons vanilla
5 tablespoons cocoa                1 ½ cups flour

Melt butter.  Mix in sugar, cocoa, eggs, and vanilla.   Mix in flour.  Smooth into a greased and floured 9 X 13 cake pan.   Bake at 350 for 30 minutes or until done.