I do this with all sorts of mostly liquid food stuffs. I make a big giant batch and freeze it into various portion sizes to make quick healthy meals later. My favorite ones to make are:

• Chicken pot pie filling

• Spinach/basil pesto

• Kale pesto

• Falafel

• Lentil burger mix

• Cilantro sauce

• Ginger syrup

I either use a silicone cupcake tray to make 1/3 cup pucks or I use different size takeout containers that fit the portion size. Either way, it means I can keep churning out healthy foods/sauces in the summer from things in my garden and still enjoy them in the winter when produce at the grocery store isn't as good. I usually can anything acidic like tomato sauce or apple sauce, but anyone can freeze that as well.