Are you in the US? Do you have an IKEA within driving distance, or willing to order online? Most of our food storage containers (we’ve been using glass for a LONG time) are from IKEA, they have sizes that big and prices are reasonable!

Probably not what you’re thinking of, but my eldest child really dislikes “traditional” breakfast foods, so she’ll have things like chicken noodle soup or red beans and rice. There’s nothing that says you have to eat only “breakfast” during breakfast hours!