Honestly, haven't had better than these bars before

Servings: 12
Ingredients
1 cup unsalted butter
2 cups granulated sugar
4 large eggs
1 teaspoon vanilla extract

cup all-purpose flour
1/2 cup unsweetened cocoa powder
1/2 teaspoon baking powder
1/4 teaspoon salt
1 cup semi-sweet chocolate chips
1/2 cup chopped nuts (optional)
Directions