| 1/2 pound semi-sweet chocolate |
| 1 1/2 cup all-purpose flour |
| 1/2 cup unsweetened cocoa powder |
| 1 cup (2 sticks) unsalted butter, at room temperature |
| 1 teaspoon vanilla extract |
| 2 cups chopped pecans or walnuts; or 2 cups chocolate, butterscotch, or peanut butter chips; or 1 cup chopped nuts and 1 cup chips |