– Decadent and Fudgy. These brownies are moist, fudgy, and incredibly indulgent. The addition of peanut butter enhances the brownie's richness. – Nutty Twist. Peanut butter not only adds a delightful nutty flavor but also creates a marbled swirl that looks as good as it tastes. – Simple Ingredients. You'll likely have most of the ingredients in your pantry. Peanut Butter Brownies are the perfect last-minute dessert. – Family Favorite. Loved by kids and adults alike, these brownies are great for gatherings, bake sales, or just a cozy night in.