Dark Chocolate Walnut Brownie Recipe

Ingredients

• 1/2 cup unsalted butter
• 1/2 cup sugar (add another 1/4 to 1/2 cup if you like it sweet)
• 2 eggs
• 1 teaspoon vanilla extract
• 1/3 cup dark chocolate cocoa powder
• 1/2 cup flour
• 1/4 teaspoon salt
• 1/4 teaspoon baking powder
• 1/2 cup chopped walnuts