This Double Chocolate Ricotta Marble Cake is a moist and tender loaf cake featuring a beautiful swirl of rich cocoa and creamy ricotta cheese. The combination of ricotta and sour cream keeps the cake incredibly soft and flavorful, while the semisweet chocolate chips add bursts of chocolatey delight. Perfect for dessert or an indulgent snack, this loaf cake offers a balanced texture and classic marble appearance that is as pleasing to the eye as it is to the palate.