The term 'Casserole Tidbit' is a combination of three words: NOODLE (6 letters), PEA (3 letters), and Stringbean (10 letters). Noodles are a type of pasta made from unleavened dough, usually wheat flour, that is cut into long strips. Peas are small, round, green legumes that are often eaten as a vegetable. Stringbeans are a type of green bean that is longer and thinner than other varieties. Together, these three ingredients make up a casserole tidbit, which is a savory dish made with noodles, peas, and stringbeans.