Ingredients:
- 8 tablespoons (1 stick) butter, melted, plus 8 more tablespoons (1 stick) butter, melted, plus additional butter, for greasing pan
- 1 (18.25-ounce) package chocolate cake mix
- 1 egg, plus 2 eggs
- 1 (8-ounce) package cream cheese, softened
- 3 to 4 tablespoons cocoa powder
- 1 (16-ounce) box powdered sugar
- 1 teaspoon vanilla extract
- 1 cup chopped nuts