1cupwalnuts or pecans - like most recipes this called for chopped nuts but I have come to love putting larger pieces in so I recommend chopping by hand with a knife instead of in a food processor.
Instructions
Preheat oven to 350 degrees. Butter a 9X9X2" pan.
Melt butter and chocolate together in large saucepan; watch carefully to just melt. Remove from heat.
Gradually mix in sugar and then vanilla.
Add eggs one at a time and beat well after each.
Mix flour and salt together and add to chocolate mixture.
Mix in nuts.
Put mixture into buttered pan and bake for 30 -35 minutes.