baby cake
/ˈbeɪbɪ keɪk/noun
1Either of two cakes traditionally eaten during the Christmas season: (a) a large cake into which a bean, coin, or other token is inserted which confers upon the recipient of the serving containing it the status of king or queen of the feast; = Twelfth-cake; (b) a small cake or biscuit formed into the shape of a person; = yule-dough. Now historical and rare.
2A small cake, especially one intended as a single serving.
3Chiefly in plural Used as a term of endearment or affectionate form of address: sweetheart, honey, sugar pie.
Origin
Mid 17th century; earliest use found in Ben Jonson (?1573–1637), poet and playwright. From baby + cake.