Ingredients
4 ounces unsweetened chocolate (bakers chocolate squares)
1/2 pound butter or margarine
2 1/2 cups sugar
1 cup flour
4 eggs
2 cups chopped pecans or walnuts

Directions

• Preheat the oven to 350ºF (325ºF if using a glass baking dish).
• Melt the chocolate and butter or margarine in a heavy saucepan over low heat.
• Stir in the remaining ingredients in order, one at a time (the eggs also go in one at a time).
• Pour the mixture into a 9"x13" pan that has been lined with foil and greased.
  
• Bake for 20 to 25 minutes. Do not over bake - the center should still have slightly moist crumbs when tested with a toothpick inserted into the center of the brownies.
• Cool thoroughly before cutting.