I did that overnight (crock pot). Now it's a lovely chicken rice soup that I'll take for lunches this week. :) - ellbeecee

I'm going to make soup tomorrow and freeze the rest for later. - Shannon Jiménez

Leave 1/4-1/2 inch at the top and they won't bust - Melanie Reed

Have you tried leaving the lids loose until they freeze? That way the pressure won't build up as they freeze. Once frozen, you can tighten them. - Shannon Jiménez

Another alternative is to actually can the broth in the traditional way (when it is hot) and then store it in the pantry instead of the freezer, but that's a bigger PITA. - Shannon Jiménez

hmmm...yummy... - Darda Aswin