They all have a different favorite. DH and my youngest like my cheesy meatloaf, my oldest likes hot wings, and my middle son likes tilapia. They all like mac&cheese, green beans and corn for their side dishes though. My favorite is my Grandma's recipe for veggie beef soup. Yummy.
My daughters favorite meal is spaghetti. My husbands is anything mexican or at least covered in cheese. My son would be happy with sandwiches every night (because it's quick). I don't really have a favorite, but I do love a good steak.