Name: Rocky Road Brownies
Prep time: 2 h 15 min
Cook time: 35 min
Total time: 2 h 50 min
Ingredients: 1 cup less 1 tablespoon all-purpose flour; 1/4 teaspoon baking powder; 1/4 teaspoon salt; 4 1/2 tablespoons unsalted butter; 1/2 cup plus 1 tablespoon unsweetened cocoa powder; 1 1/4 cups sugar; 1 large egg; 2 large egg whites; 2 teaspoons vanilla extract; 8 regular-size marshmallows; 1/3 cup white chocolate chips; 1/3 cup milk chocolate chips