Most babies are developmentally ready to eat muffins somewhere between 6 to 9 months (though specific timing can vary; talk to your doctor or dietitian about questions regarding your baby's readiness for certain solids). Break the muffin into small pieces for them to grasp and eat when ready. Note that some babies, especially those newer to solids, may struggle with muffins as the texture is soft and can ball up in the mouth - if this occurs, wait until they're a bit older before serving them.