Ravioli can be defined as Italian pasta made of thin pasta dough filled with delectable ingredients. These pocket-like morsels can be filled with anything from meat, cheese, and vegetables to seafood and nuts.  However, the most popular filling is a smooth ricotta cheese blended with spinach leaves. This classic combination has become a global favorite due to its flavor and versatility.  Whether stuffed in simple tomato sauce or topped with melted butter, these little pillow-shaped delicacies are sure to tantalize your taste buds.