Fudgy Black Tie Brownie Cake | Heinen's Grocery Store

Ingredients

• 10 tablespoons unsalted butter, softened
• 1 1/4 cup granulated sugar
• Zest of one 1/2 orange
• 3/4 cup unsweetened cocoa powder
• 2/3 cup all-purpose flour
• 1 teaspoon espresso powder (optional)
• 1/2 teaspoon salt
• 1/4 teaspoon baking powder
• 2 large eggs
• 1 teaspoon vanilla extract
• 2/3 cup chopped, toasted walnuts
• 3 oz melted bittersweet or dark chocolate
• 3 oz melted white chocolate