Deep Dark Brownies

Bahan-bahan (25 porsi)

• 3/4 cup all purpose flour
• 1 tablespoon cocoa powder
• 1/4 teaspoon salt
• 1/2 cup (1 stick) unsalted butter
• 3/4 teaspoon instant espresso powder
• 5 ounces chopped semisweet chocolate
• 3/4 cup granulated white sugar
• 1/4 cup packed light brown sugar
• 3 large eggs, (at room temperature)
• 1 teaspoon vanilla extract
• 3/4 cup semisweet chocolate chips, (divided)