There are two kinds of cooking: cooking when you have time and energy, and cooking when you don't. Most recipe content is written for the first kind. This is for the second.
On an exhausted night, the goal is not a good meal. The goal is a meal that's better than nothing and won't take 40 minutes. Lower the bar and you remove the internal negotiation about whether to bother. A scrambled egg on toast counts. Two ingredients heated together counts. The benchmark is: did I eat something real?
When energy is low, you cook from what you have. Keep these in the house always:
Garlic scrambled eggs: eggs, butter, garlic powder. 8 minutes, one pan, ~200 kcal, 14g protein. This is the floor. On the worst nights, this is dinner.
Tomato scrambled eggs: cherry tomatoes, eggs, butter. 10 minutes, genuinely good, under 220 kcal.
Tuna on toast: open a can, season, eat. 3 minutes. ~300 kcal, 30g protein. Not glamorous. Works.
Mushroom and onion scrambled eggs: the slightly more effort version of basic scrambled eggs. 15 minutes, one pan, more satisfying.
Keto egg drop soup: broth, eggs, a few minutes of stirring. Surprisingly filling, almost no effort.
Frozen vegetable stir-fry with eggs: dump frozen veg in hot pan with oil, cook 5 minutes, push to side, scramble 2 eggs in, season with soy sauce. Total: 12 minutes, one pan.
The best thing you can do for exhausted future-you is cook extra when you have energy. Batch-cook rice on a good night. It keeps 5 days and turns a 30-minute meal into a 10-minute one. Portion and freeze soup. Hard-boil 6 eggs on Sunday - they're in the fridge when you need them.
Leek, potato and lentil soup is the ideal make-ahead exhausted-night meal. 180 kcal per serving, freezes well, and reheats in 4 minutes.
On exhausted nights, the prospect of cleanup kills cooking motivation before it starts. One pan, no chopping, and a meal that's faster to make than delivery is the combination you're aiming for. More on cutting cleanup in why you hate cleaning up after cooking.
Sometimes the right answer is to order food. Not every night - but when you're genuinely depleted, eating something proper without cooking is better than not eating well. The goal is most nights, not all nights.
For the bigger picture on kitchen friction, see why you hate cooking and how to fix it.