1 cup and 4 tablespoons butter.
Microwave until soft and starting to melt.

12 tablespoons cocoa.
Add to the butter and beat.

2 cups sugar.
Add and whip.

4 eggs.
Add, stir until blended. Do not overstir.

1 tablespoon vanilla.
Cut into the mix gently.

1 cups flour.
Blend.

2 cups chocolate chips.
Fold into mix.

  Pour into 13" x 9" pan and bake at 350^oF for thirty minutes.  (-32*5/9 = 177^oC)