I freeze a lot of leftovers in individual servings in food saver bags. If it is liquidy, I freeze it in the bag before I seal it. This way if I don't want to cook, everybody picks what they want. Also good for taking to work.
I, too, use my Foodsaver for portion control. And par-freezing squishy or liquid items is the best way to get the good seal without crushing the items. I've been selling discounted vacuum packaging equipment for many years now, if you ever have any questions I'd love to help you out.