"One Pot" Brownies - cooking recipe

Ingredients

4 ounces unsweetened chocolate squares
1/2 lb butter or 1/2 lb margarine
2 cups sugar
4 eggs
1 1/2 cups flour
2 teaspoons vanilla
1 cup chopped nuts or 1 cup raisins, if desired

Preparation

Melt chocolate and butter in heavy pot.
(I like to use a cast iron skillet) Let cool slightly, then add sugar and mix well.
Add eggs, mix well, then beat in flour.
Add vanilla.
Add nuts or raisins, if desired.
Stir well.
Bake in 9 1/2 x 13 inch greased pan for 20-25 minutes at 375 degrees.
Do Not Overbake.