I pretty much serve the same things all the time and just keep rotating them. There doesn't seem to be much use introducing new stuff because the kids usually don't want to try new stuff.
I seem to rotate through homemade lasagna, rice and chicken with veg, rice and goulash and vegs, spaghetti, chicken noodle soup. Once every 8 weeks I might do grilled cheese using real cheese to melt.
I usually tell parents upfront in the interview that we stick to the foods that the kids are familiar with and rotate them over and over. I have tried wraps, perogies, curries, pizzas etc and it goes nowhere other than the garbage can. I know what I am feeding is homecooked, healthy and the kids will eat it