Before baby tries anything new, make sure to introduce single ingredients every 3 to 5 days to ensure baby is not allergic. As long as baby has already been introduced to each ingredient (egg, bread, milk, cinnamon and vanilla extract) with no allergic reactions, then french toast will be okay for babies to eat. If your baby shows any signs of atopic dermatitis, allergic rhinitis or asthma, please talk to your doctor before introducing new foods.