Triple Chocolate Chunk Cookies

Bahan-bahan (48 porsi)

• 16 ounces semisweet chocolate chips
• ½ cup unsalted butter
• 1⅓ cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon salt
• 4 large eggs
• 1½ cups light brown sugar, (packed)
• 2 teaspoons vanilla extract
• 24 ounces semi-sweet chocolate chunks
• additional chopped chocolate bar ((optional))