Peanut butter swirl brownies are a heavenly combination of chocolate and peanut butter. These brownies are made by swirling a creamy peanut butter mixture into the chocolate batter before baking. The result is a marbled effect with a rich and nutty flavor. The peanut butter adds a deliciously smooth and creamy texture to the brownies, making them a favorite among peanut butter lovers. Enjoy these brownies as a delightful snack or dessert, and pair them with a glass of cold milk for the ultimate indulgence.