Chocolate Chip Walnut Brownies

Bahan-bahan (24 porsi)

• 1 cup (2 sticks) unsalted butter
• 8 ounces semi sweet chocolate, (coarsely chopped)
• 3 ounces unsweetened chocolate, (coarsely chopped)
• 1 cup + 2 tablespoons granulated white sugar
• 3 large eggs, (at room temperature)
• 1 tablespoon vanilla extract
• 3/4 cup all purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon kosher salt
• 1 cup (or more) coarsely chopped walnuts ((can sub pecans))
• 1 cup semi sweet chocolate chips