Recently got back into cooking. Learn 2-3 easy recipes that can act as a base for the rest of your meal. Get a rice cooker and an instant pot. White rice is quick so its ADHD friendly, plus ricecooker will handle everything in case of distractions. Same for the instant pot.

Also don’t overlook sous vide. I’ve made some heavenly meals with cheap cuts of beef (e.g. shank) recently. Chuck it in a vacuum bag and wait - that’s it! Pull it out and give it a nice sear.

I usually do 2 bags and chuck one in the freezer for reheating at a later date.

If you don’t eat meat, no worries! Loads of veggies are great too, especially roots.