If they're active - pancakes and waffles I have frozen, pancakes they defrost in microwave and waffles our toaster is that one where you press frozen bit and it defrosts (I make own waffles 2 types!) Pancakes freeze in like 5s and baking paper between and take out in portions too as a snack.
Honestly all food I make is in bulk and I have a standing freezer where all leftovers go. Chest freezers I find you lose stuff. Dates on everything that I put away (masking tape on boxes or ikea freezer bags, 2 sharpies live in my kitchen) and another paper outside of freezer where inventory is put and dates.
Silicone freezer containers which are 250ml and 500ml portions from webake if not mistaken (I have loads) where I freeze portions of soup and take out depending on how much I need.
You can also freeze cake and defrosts nicely enough, I also freeze tiramisu 😂
Two frozen bananas, take out, leave 10min on side and 200ml milk and milkshake is made, I add sesame sometimes or whatever else I feel like, golden syrup etc. Or just banana and milk.
Overnight oats in the fridge. Couscous salads in fridge.
You can also make sauces in batches like ragu, or cottage pie everything par the potato and then defrost and put together the dinner if tough on time.
Curries freeze well (we do a lot of Dahl and overall vegan or just the base of a curry and I defrost the amount I need for x people and add a protein).
There's also bread you can make fresh that can stay in the fridge for days until ready for baking (Sally's addiction or something, rustic) and bread can be frozen and defrosted and heated up lastminute.
I'm pro at feeding, the one in sport eats the same dinner I make max 4x hefty portions but on regular day she'll eat 2x dinner and expects a soup as a starter too a little while before dinner.
I'm only organised as I'm juggling a lot with calorie hungry.
Muffins can be frozen and taken out day before to defrost for kids to inhale.
There are also cookie balls, made by jemma cupcake on YouTube that are frozen balls and can be shoved into oven and you'll have cookies.
PM me if anything lol I am honestly pro feeder