This Chocolate Peanut Butter Sourdough Bread is a decadent twist on traditional sourdough, combining rich cocoa and peanut butter powder layers with luscious frozen peanut butter cup pieces. The bread is naturally leavened, slow-fermented, and baked in a Dutch oven for a perfect crust and tender crumb, creating a unique sweet and nutty artisan loaf that is perfect for breakfast or dessert.