I'm not an Aussie, and I haven't read the entire thread, but I was not sure what form the low on spoons takes. For me, I can throw together a decent meal when mentally exhausted if I don't have to look at a recipe. If I have time to soak and cook lentils and rice, that's a pretty healthy meal. If I'm low on time but not exhausted, I can take out a rotisserie chicken or bake some frozen fish and frozen veg. My favorite "don't need to shop" meal used to be white rice with soy sauce and sesame seeds, though I did spend a week (poor) eating a 5 lb bag of rice with kim chi. I'm not sure why I stopped but I used to keep a bottle of thai peanut sauce for dipping veg, pouring over rice, bagel, chicken or noodles or eating with a spoon out of the bottle. Smoked salmon is great and freezes well but then it takes a day to defrost it.
I assuming people have listed the obvious but not too healthy: oatmeal made in the microwave, chips, salsa and tortilla chips, canned tomato (or other) soup with toast, toast and cream cheese, toast and peanut butter, avocado toast, pizza toast, saltines and jam, pasta and spaghetti sauce, frozen pasta, frozen pizza, french fries, eggs scrambled or omelet, baked samosa, ramen noodles, corn muffin from mix, pancakes from mix, popcorn, spaghetti agli olio.
Mostly I was surprised that I don't have a go-to list of low-on-spoons foods. Partly I'm not suffering from an illness that takes spoons, partly I live with someone who cooks as well, partly I have low standards for dinner. Mostly though my frig has perennial leftovers. This week I made a big pot of chili 2 days ago and that will get me through tomorrow when I'll make new beans. As long as one meal is cooked and vegetable or bean heavy, the other meal can be simpler either protein or carb based. It also depends on how many you're feeding. If I had to make fresh meals for a picky family every night, I'd be out of spoons too. Also, how stocked is the frig and do you have any chopped/frozen veg? I try to chop my veg ahead of time so the cooking can be done quickly. Pre chopped onions are a lifesaver as other things can be gathered or defrosted or opened as the onions cook.
Can I just add that I'm surprised at rice paper being listed as a low-effort food. Just getting the water temp right for soaking is a hassle, before adding that I have to make peanut sauce with it. I'll have to give it another chance.