L.G.
If you have already ruled out possibilities of a wheat or dairy allergy- then what about dried tortelinis from the pasta section? They have cheese ones or tri colored ones filled with cheese, boil a few in water for 14 min-15 min to make sure they are nice and mooshy, cutting them up as well. I add olive oil and a little parm to mine- tasty and quick
can nuke a sweet potato, wash, poke with fork and put in for13 min... mash. add butter- even cinnamon...
Soup - like hearty progresso and the like are good as well as they are pre softened, you can strain out most of the liquid- probably get more meals for your money than using the mini toddler meals. I am not certain about the sodium content being the same but I am sure the soups can come in low sodium.