Feeding time

Tinesha • 26 y/o | Single boy mom.
Hello guys!
So I've started my LO on simple foods like bananas, apples and whatever says supportedsitter. I was wondering if anyone has any biscuit( teething cookie) recipes that I can use breastmilk in? He's only 4 months old but he had started teething it seems and he is very interested in cookies and chewing on everything.