Cereal morsel is a term used to describe small pieces of cereal, which are often used as ingredients in other recipes. The three crossword solutions for the term are RAISIN (6 letters), FLAKE (5 letters), and OAT (3 letters). Raisins are dried grapes that are often used as a topping on cereal, while flakes are thin, flat pieces of cereal that are usually made from grains such as corn or wheat. Oats are a type of grain that is often used to make porridge or granola.