Easy Peanut Butter-Marshmallow Brownies | America's Test Kitchen

Ingredients

• 1/2 cup plus 2 tablespoons boiling water
• 2 ounces (57 grams) unsweetened chocolate , chopped fine
• 1/3 cup (1 ounce/28 grams) Dutch-processed cocoa powder
• 2 1/2 cups (17 1/2 ounces/496 grams) sugar
• 1/2 cup plus 2 tablespoons vegetable oil
• 2 large eggs plus 2 large yolks
• 4 tablespoons unsalted butter , melted
• 2 teaspoons vanilla extract
• 1 3/4 cups (8 3/4 ounces/248 grams) all-purpose flour
• 3/4 teaspoon salt
• 1 cup (6 ounces/170 grams) peanut butter chips
• 1/2 cup marshmallow crème