Twix Bar Brownies

Bahan-bahan (36 porsi)

• 1 pound (4 sticks) unsalted butter
• 16 ounces semisweet chocolate chips
• 6 ounces unsweetened chocolate, (chopped)
• 2 tablespoons espresso powder
• 7 large eggs
• 2 tablespoons vanilla extract
• 2¼ cups granulated white sugar
• 1¼ cups all-purpose flour
• 1 tablespoon baking powder
• 1 teaspoon salt
• 12 ounces Twix candy bars
• 1 full-size Twix candy bar, (sliced thinly)