I have tried a bunch of vegan/dairy free cheese. I hate all of them except 3. The all time best one I have tried is the plant based Babybel, it tastes pretty darn close to the original Babybel. It melts pretty nice too. I have even grated it and used it. I wish they sold it in blocks or slices too. Definitely give it a shot. Boursin also has a dairy free herb chess spread that I really like on crackers but you could use it for other things too. And third I have liked a few dairy free cream cheeses.

You might try putting it in lasanga and covering it up a bit with the noodles, sauce, maybe some spinach etc. I haven’t tried it but maybe it would work in quiche if you add a bunch of other veggies too?