For food that is specially blessed for holy use, you’re supposed to only make or bring enough that you will not have leftovers. The point of such food is to be part of the ritual, not to chow down. If you end up with more than you can eat before it spoils, you can burn it, bury it, or lay it on the ground in some area people do not go.
I would note this is not a common occurrence to have food blessed this way. It’s a special holiday thing. Latin Catholic churches do not often do it.
The only food item I see Latin Catholic priests blessing in this special way regularly is salt, which does not go bad, and can easily be used up in cooking if need be.