1/2 cup cocoa
1/2 cup butter (1 stick)
1 cup sugar
1/4 cup flour
1 cup chopped or broken-up walnuts or pecans
1 teaspoon vanilla
Pinch of salt
Heat oven to 325 degrees
Melt butter in saucepan with cocoa and stir until smooth. Remove from heat and allow to cool for a few minutes then transfer to a large bowl. Whisk in eggs one at a time. Stir in vanilla.
In separate bowl, combine sugar, flour, nuts and salt. Add to the cocoa-butter mixture. Stir until just combined.
Pour into a greased 8×8 in square pan. Bake 30-35 minutes. Do not overbake; the brownies should be gooey. Let cool, then cut into bars.