Anything expensive, unhealthy or a combination of both. Just recently I cooked an overly rich steak dinner of filet mingon topped with foie gras and a variety of sides. Eaten on the couch, of course, because I’m truly a glutton.
Fucking shoyu ramen, from scratch with all the trimmings. It's practically a two day affair, between the broth, the onsen tamago, the noodles and the pork belly. Worth every minute spent making it, and almost worth the excessive sodium intake.
Meatloaf. It's a fairly unhealthy, mildly cost intensive main, but it's so good.
Also, lemon meringue pie because, damn, it is labor intensive. For a middle aged crippled dude, it can be a major undertaking. Juicing lemons, making curd, prebaking crusts that are finicky to get perfect, then getting the meringue right. It's al all afternoon task. But! Then you take a bite, and that sunshine you've captured and turned into a pie makes all the pains and aches fade a little :)
Stromboli from scratch is amazing but can take a few hours to make. I like to use this recipe as a base but I'll change up the fillings depending on what sounds good.