1/2 cup butter, melted 1 cup sugar 1 tsp vanilla 2 eggs 1/4 cup Hershey's cocoa powder 3/4 cup flour 1/2 cup (of either: nuts, chocolate chips, butterscotch chips, etc; whichever one is your favorite
Heat oven to 350 degrees.
Generously grease an 8x8 pan, and dust with sugar.
In a large bowl add melted butter and beat in sugar and vanilla till combined. Then beat in one egg at a time till combined. Carefully mix in the cocoa and flour. Stir in your favorite add in and pour into pan. Bake 25-30 min, or until toothpick comes out fairly clean.