I do the baking and then into the food processor to get the shells somewhat fine. I then add them to their daily oatmeal at the end of cooking while still hot--yes I give them oatmeal every morning. I make enough to last 7-10 days at a time. I found that if I grind them fine the girls will eat them. When I first started they would eat around the bigger pieces and leave them. I wanted to make sure they get their calcium.