Find something you can cook that other people rave over. The reward is the dopamine hit you get. Do you have kids? Make buttered noodles with cut up chicken breast. Very very low effort and kids love it.
Just the wife? Make meatballs one night. Pretty easy to do, super tasty, bit heavy on the cleanup tho. Make enough to make it worth it. They're a great snack to munch on throughout the day. I call them one of my ADHD snacks. Then the next night boil some spaghetti, make some sauce, easy peasy and just buy some frozen garlic bread. Boom "fancy" dinner in 2 steps with left over ADHD snacks.
Ever try smoking things? It takes some trial and error, but easily can turn into a hyperfocus. It's a bunch of low-effort steps spread throughout 2-8 hours. And makes some insanely tasty food.